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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. 1 × 10 = ______
  2. 23 + 20 = ______
  3. 43 + 10 = ______
  4. 27 + 20 = ______
  5. 89 − 10 = ______
  6. 64 + 10 = ______
  7. 85 + 10 = ______
  8. 28 − 10 = ______
  9. 47 − 10 = ______
  10. 50 − 10 = ______
  11. 15 + 10 = ______
  12. 75 − 10 = ______
  13. 21 + 20 = ______
  14. 56 + 10 = ______
  15. 85 − 10 = ______
  16. 45 − 10 = ______
  17. 70 + 20 = ______
  18. 94 − 10 = ______
  19. 22 + 20 = ______
  20. 83 + 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath