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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. 65 + 10 = ______
  2. 36 + 20 = ______
  3. 1 × 10 = ______
  4. 48 + 20 = ______
  5. 51 + 10 = ______
  6. 82 + 10 = ______
  7. 54 + 20 = ______
  8. 57 − 10 = ______
  9. 62 + 20 = ______
  10. 86 − 10 = ______
  11. 61 − 10 = ______
  12. 54 + 10 = ______
  13. 78 + 20 = ______
  14. 56 − 10 = ______
  15. 92 − 10 = ______
  16. 66 + 20 = ______
  17. 32 − 10 = ______
  18. 9 × 10 = ______
  19. 3 × 10 = ______
  20. 51 + 20 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath