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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. 13 + 10 = ______
  2. 78 + 10 = ______
  3. 65 + 20 = ______
  4. 82 + 20 = ______
  5. 30 + 10 = ______
  6. 38 + 20 = ______
  7. 83 + 10 = ______
  8. 89 + 10 = ______
  9. 75 + 20 = ______
  10. 22 + 20 = ______
  11. 87 + 10 = ______
  12. 42 + 20 = ______
  13. 35 − 10 = ______
  14. 4 × 10 = ______
  15. 54 + 10 = ______
  16. 9 × 10 = ______
  17. 5 × 10 = ______
  18. 47 + 20 = ______
  19. 68 − 10 = ______
  20. 77 + 20 = ______