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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. 26 + 20 = ______
  2. 42 + 20 = ______
  3. 42 + 10 = ______
  4. 72 + 20 = ______
  5. 27 + 20 = ______
  6. 47 + 20 = ______
  7. 8 × 10 = ______
  8. 59 + 10 = ______
  9. 51 + 20 = ______
  10. 47 − 10 = ______
  11. 40 + 20 = ______
  12. 5 × 10 = ______
  13. 74 + 20 = ______
  14. 89 + 20 = ______
  15. 64 − 10 = ______
  16. 45 + 10 = ______
  17. 76 + 10 = ______
  18. 53 + 20 = ______
  19. 41 + 10 = ______
  20. 18 + 20 = ______