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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. 11 + 20 = ______
  2. 43 + 10 = ______
  3. 82 + 10 = ______
  4. 76 + 20 = ______
  5. 87 − 10 = ______
  6. 59 + 10 = ______
  7. 14 + 10 = ______
  8. 21 + 20 = ______
  9. 41 + 10 = ______
  10. 27 − 10 = ______
  11. 66 + 20 = ______
  12. 19 + 20 = ______
  13. 47 + 20 = ______
  14. 9 × 10 = ______
  15. 20 + 20 = ______
  16. 39 + 20 = ______
  17. 27 + 20 = ______
  18. 99 − 10 = ______
  19. 87 + 10 = ______
  20. 3 × 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath