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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. 38 + 20 = ______
  2. 1 × 10 = ______
  3. 14 + 20 = ______
  4. 3 × 10 = ______
  5. 50 − 10 = ______
  6. 62 − 10 = ______
  7. 52 + 10 = ______
  8. 78 − 10 = ______
  9. 69 + 20 = ______
  10. 29 − 10 = ______
  11. 76 + 10 = ______
  12. 56 + 20 = ______
  13. 81 − 10 = ______
  14. 44 + 10 = ______
  15. 57 + 10 = ______
  16. 79 + 20 = ______
  17. 90 − 10 = ______
  18. 45 + 20 = ______
  19. 89 + 20 = ______
  20. 21 + 20 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath