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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. 29 + 20 = ______
  2. 14 + 20 = ______
  3. 59 − 10 = ______
  4. 20 + 10 = ______
  5. 75 + 20 = ______
  6. 56 + 20 = ______
  7. 37 + 20 = ______
  8. 56 − 10 = ______
  9. 9 × 10 = ______
  10. 7 × 10 = ______
  11. 67 + 20 = ______
  12. 78 − 10 = ______
  13. 6 × 10 = ______
  14. 81 − 10 = ______
  15. 64 + 10 = ______
  16. 60 − 10 = ______
  17. 78 + 10 = ______
  18. 2 × 10 = ______
  19. 87 + 10 = ______
  20. 3 × 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath