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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. 34 + 20 = ______
  2. 59 − 10 = ______
  3. 62 − 10 = ______
  4. 79 + 20 = ______
  5. 45 + 20 = ______
  6. 1 × 10 = ______
  7. 20 + 10 = ______
  8. 39 + 10 = ______
  9. 9 × 10 = ______
  10. 49 + 20 = ______
  11. 54 + 20 = ______
  12. 52 + 20 = ______
  13. 51 + 10 = ______
  14. 30 + 20 = ______
  15. 76 − 10 = ______
  16. 39 + 20 = ______
  17. 8 × 10 = ______
  18. 21 + 10 = ______
  19. 61 + 10 = ______
  20. 37 + 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath