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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. 15 + 10 = ______
  2. 25 + 10 = ______
  3. 16 + 20 = ______
  4. 34 − 10 = ______
  5. 55 + 20 = ______
  6. 26 + 10 = ______
  7. 3 × 10 = ______
  8. 39 − 10 = ______
  9. 43 − 10 = ______
  10. 44 + 10 = ______
  11. 48 + 20 = ______
  12. 46 − 10 = ______
  13. 79 + 10 = ______
  14. 43 + 10 = ______
  15. 76 − 10 = ______
  16. 19 + 20 = ______
  17. 1 × 10 = ______
  18. 75 − 10 = ______
  19. 15 + 20 = ______
  20. 8 × 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath