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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. 5 × 10 = ______
  2. 7 × 10 = ______
  3. 50 − 10 = ______
  4. 15 + 10 = ______
  5. 97 − 10 = ______
  6. 8 × 10 = ______
  7. 6 × 10 = ______
  8. 81 − 10 = ______
  9. 78 + 10 = ______
  10. 66 − 10 = ______
  11. 79 − 10 = ______
  12. 2 × 10 = ______
  13. 64 − 10 = ______
  14. 66 + 20 = ______
  15. 28 − 10 = ______
  16. 85 + 20 = ______
  17. 11 + 20 = ______
  18. 81 + 10 = ______
  19. 15 + 20 = ______
  20. 65 + 20 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath