FreeMath
Grade 7hard

Subtracting Integers Quiz

Subtracting integers is where the rule 'subtracting a negative is the same as adding a positive' actually has to be applied under pressure. This quiz forces students to handle every sign combination, including the awkward ones like (-8) − (-3) where most kids get tangled. The shortcut to remember: rewrite every subtraction as an addition (a − b becomes a + (−b)), and then it's just adding integers. After this quiz feels solid, multiplying and dividing integers is just a sign-rules cleanup away.

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All 20 Practice Problems

Every question in this set. Solve them on paper, or use the interactive tool above for instant feedback and hints.

  1. 1.(-8) − (-15) = ?
  2. 2.(-11) − (-5) = ?
  3. 3.(-20) − (-15) = ?
  4. 4.20 − (-12) = ?
  5. 5.(-7) − 1 = ?
  6. 6.(-13) − (-13) = ?
  7. 7.12 − 15 = ?
  8. 8.3 − (-1) = ?
  9. 9.(-9) − 5 = ?
  10. 10.13 − (-14) = ?
  11. 11.(-3) − (-14) = ?
  12. 12.6 − (-14) = ?
  13. 13.17 − 1 = ?
  14. 14.3 − (-9) = ?
  15. 15.6 − 2 = ?
  16. 16.11 − (-14) = ?
  17. 17.14 − (-19) = ?
  18. 18.4 − (-15) = ?
  19. 19.20 − 3 = ?
  20. 20.8 − 20 = ?
Show answer key
  1. 1.(-8) − (-15) = ? Answer: 7
  2. 2.(-11) − (-5) = ? Answer: -6
  3. 3.(-20) − (-15) = ? Answer: -5
  4. 4.20 − (-12) = ? Answer: 32
  5. 5.(-7) − 1 = ? Answer: -8
  6. 6.(-13) − (-13) = ? Answer: 0
  7. 7.12 − 15 = ? Answer: -3
  8. 8.3 − (-1) = ? Answer: 4
  9. 9.(-9) − 5 = ? Answer: -14
  10. 10.13 − (-14) = ? Answer: 27
  11. 11.(-3) − (-14) = ? Answer: 11
  12. 12.6 − (-14) = ? Answer: 20
  13. 13.17 − 1 = ? Answer: 16
  14. 14.3 − (-9) = ? Answer: 12
  15. 15.6 − 2 = ? Answer: 4
  16. 16.11 − (-14) = ? Answer: 25
  17. 17.14 − (-19) = ? Answer: 33
  18. 18.4 − (-15) = ? Answer: 19
  19. 19.20 − 3 = ? Answer: 17
  20. 20.8 − 20 = ? Answer: -12

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