Decimal Subtraction and Borrowing Quiz for Grade 7

1. What is 5.7 − 2.3?

3.4

3.5

2.4

4.4

To find the result of 5.7 minus 2.3, align the numbers by their decimal points and subtract each column. Starting from the right, 7 minus 3 equals 4, and 5 minus 2 equals 3. Thus, 5.7 - 2.3 equals 3.4.

Explanation

To find the result of 5.7 minus 2.3, align the numbers by their decimal points and subtract each column. Starting from the right, 7 minus 3 equals 4, and 5 minus 2 equals 3. Thus, 5.7 - 2.3 equals 3.4.

2. Subtract: 8.5 − 3.8. Which answer is correct?

4.7

5.3

4.3

5.7

To solve 8.5 − 3.8, align the numbers by their decimal points. Subtracting 8.5 from 3.8 results in 4.7. Breaking it down, 8.5 minus 3.8 equals 4.7, confirming it as the correct answer.

Explanation

To solve 8.5 − 3.8, align the numbers by their decimal points. Subtracting 8.5 from 3.8 results in 4.7. Breaking it down, 8.5 minus 3.8 equals 4.7, confirming it as the correct answer.

3. What is 12.4 − 5.6?

6.9

6.8

7.2

5.8

To find the result of 12.4 minus 5.6, you can align the numbers by their decimal points and subtract. Starting from the right, 4 minus 6 requires borrowing, resulting in 14 minus 6, which equals 8. Then, subtract 5 from 12 (after borrowing), leaving 6. Thus, 12.4 − 5.6 equals 6.8.

Explanation

To find the result of 12.4 minus 5.6, you can align the numbers by their decimal points and subtract. Starting from the right, 4 minus 6 requires borrowing, resulting in 14 minus 6, which equals 8. Then, subtract 5 from 12 (after borrowing), leaving 6. Thus, 12.4 − 5.6 equals 6.8.

4. When subtracting 7.2 − 4.8, you must borrow from the ____.

When subtracting 7.2 from 4.8, the operation involves borrowing because the digit in the tenths place (2) of 7.2 is smaller than that in 4.8 (8). To perform the subtraction correctly, you need to borrow from the ones place of 7.2, making it necessary to adjust the values in the ones place.

Explanation

When subtracting 7.2 from 4.8, the operation involves borrowing because the digit in the tenths place (2) of 7.2 is smaller than that in 4.8 (8). To perform the subtraction correctly, you need to borrow from the ones place of 7.2, making it necessary to adjust the values in the ones place.

Submit

5. Calculate: 10 − 3.5 = ?

6.5

7.5

5.5

8.5

To solve the equation 10 − 3.5, you subtract 3.5 from 10. This involves taking away 3.5 units from 10 units, which results in 6.5 units remaining. Thus, the solution to the calculation is 6.5.

Explanation

To solve the equation 10 − 3.5, you subtract 3.5 from 10. This involves taking away 3.5 units from 10 units, which results in 6.5 units remaining. Thus, the solution to the calculation is 6.5.

6. What is 15.3 − 7.9?

7.4

8.4

7.5

6.4

To find 15.3 − 7.9, you subtract 7.9 from 15.3. Performing the calculation, you align the decimal points and subtract: 15.3 - 7.9 equals 7.4. This result shows the difference between the two numbers, confirming that 7.4 is the correct answer.

Explanation

To find 15.3 − 7.9, you subtract 7.9 from 15.3. Performing the calculation, you align the decimal points and subtract: 15.3 - 7.9 equals 7.4. This result shows the difference between the two numbers, confirming that 7.4 is the correct answer.

7. Subtract 9.6 − 2.7. What do you get?

6.9

7.1

6.8

7.0

To find the result of 9.6 minus 2.7, align the numbers by their decimal points and subtract. Starting from the rightmost digit, 6 minus 7 requires borrowing, resulting in 16 minus 7, which equals 9. Then, subtract 2 from 9, giving 7. Finally, 9 minus 2 equals 6, leading to the answer of 6.9.

Explanation

To find the result of 9.6 minus 2.7, align the numbers by their decimal points and subtract. Starting from the rightmost digit, 6 minus 7 requires borrowing, resulting in 16 minus 7, which equals 9. Then, subtract 2 from 9, giving 7. Finally, 9 minus 2 equals 6, leading to the answer of 6.9.

8. When you borrow in decimal subtraction, you take 1 from the next ____ place value.

In decimal subtraction, when borrowing is necessary, you take 1 from the next higher place value. This means you reduce the value of that place by 1, effectively increasing the current place's value by 10, allowing for proper subtraction to occur. This method ensures accurate calculations across different decimal places.

Explanation

In decimal subtraction, when borrowing is necessary, you take 1 from the next higher place value. This means you reduce the value of that place by 1, effectively increasing the current place's value by 10, allowing for proper subtraction to occur. This method ensures accurate calculations across different decimal places.

Submit

9. What is 20.1 − 8.7?

11.4

12.5

11.5

12.4

To find the result of 20.1 − 8.7, subtract 8.7 from 20.1. Performing the calculation yields 20.1 - 8.7 = 11.4. This demonstrates basic arithmetic subtraction, confirming that 11.4 is the correct answer.

Explanation

To find the result of 20.1 − 8.7, subtract 8.7 from 20.1. Performing the calculation yields 20.1 - 8.7 = 11.4. This demonstrates basic arithmetic subtraction, confirming that 11.4 is the correct answer.

10. Solve: 6.0 − 2.3 = ?

3.6

3.7

4.3

2.7

To solve the equation 6.0 − 2.3, we subtract 2.3 from 6.0. Performing the subtraction, we calculate 6.0 - 2.3, which equals 3.7. Thus, the result of the operation is 3.7.

Explanation

To solve the equation 6.0 − 2.3, we subtract 2.3 from 6.0. Performing the subtraction, we calculate 6.0 - 2.3, which equals 3.7. Thus, the result of the operation is 3.7.

11. To subtract 13.25 − 5.86, which step comes first?

Align the decimal points

Subtract the whole numbers

Round to the nearest tenth

Convert to fractions

To accurately subtract decimal numbers, it's essential to align the decimal points. This ensures that each digit is in the correct place value, allowing for precise subtraction of whole numbers and decimal parts. Without proper alignment, the result may be incorrect due to misplacement of values.

Explanation

To accurately subtract decimal numbers, it's essential to align the decimal points. This ensures that each digit is in the correct place value, allowing for precise subtraction of whole numbers and decimal parts. Without proper alignment, the result may be incorrect due to misplacement of values.

12. What is 25.4 − 12.8?

12.6

13.6

12.5

11.6

To solve 25.4 − 12.8, subtract 12.8 from 25.4. When you align the numbers and perform the subtraction, you find that 25.4 minus 12.8 equals 12.6. This calculation confirms that the difference between these two values is indeed 12.6.

Explanation

To solve 25.4 − 12.8, subtract 12.8 from 25.4. When you align the numbers and perform the subtraction, you find that 25.4 minus 12.8 equals 12.6. This calculation confirms that the difference between these two values is indeed 12.6.