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Mental Math Worksheet

Recommended for 1st Grade — 5th Grade

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Mental Math Worksheet

Name: ____________________Date: ____________

Instructions: Using mental strategies like making ten, doubling, and compensation to compute quickly.

20 problems

  1. 75 − 10 = ______
  2. 76 + 10 = ______
  3. 81 − 10 = ______
  4. 97 − 10 = ______
  5. 2 × 10 = ______
  6. 86 + 10 = ______
  7. 89 − 10 = ______
  8. 81 + 20 = ______
  9. 30 + 20 = ______
  10. 68 − 10 = ______
  11. 26 + 20 = ______
  12. 88 + 10 = ______
  13. 87 − 10 = ______
  14. 71 + 20 = ______
  15. 19 + 10 = ______
  16. 6 × 10 = ______
  17. 25 + 10 = ______
  18. 86 + 20 = ______
  19. 21 + 20 = ______
  20. 63 + 10 = ______