Adding and subtracting integers

  • Level: Grade 6 – Grade 7
  • Free
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  • Answer key included

Negative numbers are written in parentheses when they follow an operation sign, for example 5 − (−8). Integer operations are a seventh-grade standard (Common Core 7.NS.A.1).

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Adding and subtracting integers
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Add or subtract.

  1. 1.
    −15 + (−11) =
  2. 2.
    −10 + 18 =
  3. 3.
    −4 − 12 =
  4. 4.
    18 + 16 =
  5. 5.
    −16 − 8 =
  6. 6.
    18 + (−19) =
  7. 7.
    18 − 11 =
  8. 8.
    −20 + 13 =
  9. 9.
    −5 + 1 =
  10. 10.
    10 + 2 =
  11. 11.
    16 − 12 =
  12. 12.
    −12 − (−16) =
  13. 13.
    −4 − 10 =
  14. 14.
    −4 + 5 =
  15. 15.
    −7 + 9 =
  16. 16.
    −18 − 17 =
  17. 17.
    17 + 14 =
  18. 18.
    −6 + 18 =
  19. 19.
    18 − 5 =
  20. 20.
    −5 + 18 =
  21. 21.
    −6 − (−12) =
  22. 22.
    −17 − (−15) =
  23. 23.
    10 − 18 =
  24. 24.
    19 − (−6) =
MathSheetLabWorksheet #186247
Adding and subtracting integers Answer key
  1. 1.
    −15 + (−11) = −26
  2. 2.
    −10 + 18 = 8
  3. 3.
    −4 − 12 = −16
  4. 4.
    18 + 16 = 34
  5. 5.
    −16 − 8 = −24
  6. 6.
    18 + (−19) = −1
  7. 7.
    18 − 11 = 7
  8. 8.
    −20 + 13 = −7
  9. 9.
    −5 + 1 = −4
  10. 10.
    10 + 2 = 12
  11. 11.
    16 − 12 = 4
  12. 12.
    −12 − (−16) = 4
  13. 13.
    −4 − 10 = −14
  14. 14.
    −4 + 5 = 1
  15. 15.
    −7 + 9 = 2
  16. 16.
    −18 − 17 = −35
  17. 17.
    17 + 14 = 31
  18. 18.
    −6 + 18 = 12
  19. 19.
    18 − 5 = 13
  20. 20.
    −5 + 18 = 13
  21. 21.
    −6 − (−12) = 6
  22. 22.
    −17 − (−15) = −2
  23. 23.
    10 − 18 = −8
  24. 24.
    19 − (−6) = 25
MathSheetLabWorksheet #186247

About this worksheet

Each sheet contains 18, 24 or 30 problems (your choice) and is generated at random. Press “New problems” as many times as you like; there is no limit and no account needed.

Worked example

−6 − 2 =
  1. Subtracting 2 is the same as adding its opposite: −6 + (−2).
  2. Both numbers have the same sign: add their sizes (6 + 2 = 8) and keep the sign.
  3. −6 − 2 = −8.

Answer: −8

Teaching tips

  • Subtracting a negative is the same as adding a positive; a number line makes it concrete.

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