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Subtracting Negative Numbers

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Subtracting Negative Numbers

Practise subtracting negative numbers, explaining the effect on a value, and showing a calculation on a number line. Remember: subtracting a negative is equivalent to adding a positive.

Choose and calculate

1.What is the value of 11 − (−4)?
  • 7
  • 15
  • −15
  • −7
2.Which expression has a value of 5?
  • 2 − (−3)
  • 2 − (−5)
  • −2 − (−3)
  • 5 − (−1)
3.Evaluate −9 − (−6).
  • −15
  • −3
  • 3
  • 15

Work with signed numbers

Rewrite each subtraction of a negative as an addition, then calculate.

4.Calculate 8 − (−7).
5.Calculate −6 − (−10).
6.Calculate 0 − (−12).
7.A lift is on level −3. It moves up by 8 levels. Write a subtraction expression for this change and find the level where it stops.
8.At dawn, the temperature is −5°C. It rises by 4°C. Write this change as a subtraction of a negative number and give the new temperature.

Show and explain

9.Start at −4 on the number line. Show the movement for −4 − (−6), then write the result.
-6-5-4-3-2-101234
10.Explain why subtracting a negative number is equivalent to adding a positive number. Use an example to support your explanation.
11.Create a short real-life word problem that can be represented by subtracting a negative number. Write the matching expression and solve it.
12.If x − (−y) = 3, and x = −5, what is y?

3 printable pages

  • Subtracting Negative Numbers, page 1 of 3: Choose and calculate, Work with signed numbers

    Page 1

  • Subtracting Negative Numbers, page 2 of 3: Show and explain

    Page 2

  • Subtracting Negative Numbers, page 3 of 3: 12. If x − (−y) = 3, and x = −5, what is y?

    Page 3

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