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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. 42 + 10 = ______
  2. 5 × 10 = ______
  3. 9 × 10 = ______
  4. 2 × 10 = ______
  5. 38 − 10 = ______
  6. 66 + 20 = ______
  7. 31 + 20 = ______
  8. 71 + 10 = ______
  9. 47 + 20 = ______
  10. 92 − 10 = ______
  11. 20 + 10 = ______
  12. 89 − 10 = ______
  13. 58 + 20 = ______
  14. 7 × 10 = ______
  15. 83 − 10 = ______
  16. 28 − 10 = ______
  17. 26 + 10 = ______
  18. 51 + 20 = ______
  19. 81 + 20 = ______
  20. 8 × 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath