PN.12B, SEC 2, Subtrct std fm (50)
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Question 1 of 50
1. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(2.3 × 10³) – (1.3 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 2 of 50
2. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(6.8 × 10³) – (2.4 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 3 of 50
3. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(6.7 × 10⁻²) – (2.3 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 4 of 50
4. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(5 × 10²) – (2 × 10²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 5 of 50
5. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(4 × 10⁴) – (3 × 10⁴)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 6 of 50
6. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(4 × 10⁻⁴) – (1 × 10⁻⁴)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 7 of 50
7. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(6.4 × 10⁴) – (3.2 × 10⁴)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 8 of 50
8. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(2 × 10⁻²) – (1 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 9 of 50
9. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(5.9 × 10⁻³) – (1.9 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 10 of 50
10. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(7.8 × 10³) – (2.4 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 11 of 50
11. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(5.5 × 10⁻³) – (2.5 × 10⁻³)
[0.003]
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 12 of 50
12. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(7 × 10⁻²) – (4 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 13 of 50
13. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(9 × 10²) – (3 × 10²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 14 of 50
14. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(8 × 10⁻²) – (4 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 15 of 50
15. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(9.5 × 10⁻³) – (4.2 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 16 of 50
16. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(3.5 × 10³) – (2.1 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 17 of 50
17. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(6.2 × 10⁻³) – (3.1 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 18 of 50
18. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(3.6 × 10⁻²) – (1.2 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 19 of 50
19. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(8 × 10²) – (3 × 10²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 20 of 50
20. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(7 × 10⁻⁴) – (2 × 10⁻⁴)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 21 of 50
21. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(5 × 10⁻³) – (1 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 22 of 50
22. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(6.7 × 10³) – (2.3 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 23 of 50
23. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(9.1 × 10⁻²) – (4.5 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 24 of 50
24. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(2 × 10⁻²) – (1 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 25 of 50
25. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(4 × 10⁴) – (1 × 10⁴)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 26 of 50
26. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(4 × 10⁻³) – (2 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 27 of 50
27. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(8.3 × 10⁻³) – (3.1 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 28 of 50
28. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(2 × 10³) – (1 × 10³)
-
× 10
⌨️ Enter your answer in standard form in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 29 of 50
29. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(5.9 × 10³) – (1.9 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 30 of 50
30. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(2.3 × 10⁻²) – (1.3 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 31 of 50
31. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(6.8 × 10⁻³) – (2.4 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 32 of 50
32. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(5.5 × 10²) – (2.5 × 10²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 33 of 50
33. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(7 × 10²) – (4 × 10²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 34 of 50
34. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(5 × 10⁻³) – (2 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 35 of 50
35. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(4 × 10⁻²) – (3 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 36 of 50
36. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(8 × 10³) – (4 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 37 of 50
37. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(9.5 × 10³) – (4.2 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 38 of 50
38. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(6.4 × 10⁻²) – (3.2 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 39 of 50
39. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(6.2 × 10³) – (3.1 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 40 of 50
40. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(3.6 × 10³) – (1.2 × 10³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 41 of 50
41. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(7.8 × 10⁻³) – (2.4 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 42 of 50
42. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(7 × 10⁴) – (2 × 10⁴)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 43 of 50
43. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(5 × 10²) – (1 × 10²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 44 of 50
44. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(9 × 10⁻²) – (3 × 10⁻²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 45 of 50
45. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(9.1 × 10²) – (4.5 × 10²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 46 of 50
46. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(2 × 10⁴) – (1 × 10⁴)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 47 of 50
47. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(3.5 × 10⁻³) – (2.1 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 48 of 50
48. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(4 × 10⁴) – (2 × 10⁴)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 49 of 50
49. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(8.3 × 10²) – (3.1 × 10²)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
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Question 50 of 50
50. Question
Topic: Subtraction with Standard Form.
Please have a pen and paper ready to show your workings 📝
Calculate the following:
(8 × 10⁻³) – (3 × 10⁻³)
-
× 10
⌨️ Enter your answer in the fields provided.
CorrectIncorrectHint
Rules for Adding and Subtracting Numbers in Standard Form
Standard form is written as A × 10n, where:
– A is a number between 1 and 10.
– n is an integer representing how many places the decimal point has moved.
To add or subtract numbers in standard form, follow these steps:
Step 1: Convert each number from standard form (A × 10n) to its ordinary form by calculating the value.
Step 2: Perform the addition or subtraction on the ordinary numbers.
Step 3: Convert the result back to standard form (A × 10n) by ensuring A is between 1 and 10, and n is the number of decimal jumps required.
Tip: Carefully check your calculations when converting back to standard form to ensure accuracy!
-