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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. 21 − 10 = ______
  2. 51 + 10 = ______
  3. 16 + 20 = ______
  4. 85 + 20 = ______
  5. 72 − 10 = ______
  6. 3 × 10 = ______
  7. 4 × 10 = ______
  8. 70 + 10 = ______
  9. 6 × 10 = ______
  10. 12 + 20 = ______
  11. 57 + 10 = ______
  12. 18 + 10 = ______
  13. 40 + 10 = ______
  14. 34 − 10 = ______
  15. 11 + 20 = ______
  16. 79 + 20 = ______
  17. 24 − 10 = ______
  18. 70 − 10 = ______
  19. 1 × 10 = ______
  20. 24 + 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath