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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. 57 + 20 = ______
  2. 36 + 20 = ______
  3. 31 + 20 = ______
  4. 49 + 20 = ______
  5. 1 × 10 = ______
  6. 13 + 10 = ______
  7. 85 + 10 = ______
  8. 2 × 10 = ______
  9. 78 + 10 = ______
  10. 39 + 10 = ______
  11. 52 + 20 = ______
  12. 4 × 10 = ______
  13. 3 × 10 = ______
  14. 68 + 10 = ______
  15. 43 − 10 = ______
  16. 29 + 10 = ______
  17. 23 + 10 = ______
  18. 82 − 10 = ______
  19. 90 − 10 = ______
  20. 78 − 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath