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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. 40 − 10 = ______
  2. 30 + 10 = ______
  3. 56 + 10 = ______
  4. 79 + 20 = ______
  5. 3 × 10 = ______
  6. 31 + 10 = ______
  7. 38 + 10 = ______
  8. 24 + 20 = ______
  9. 65 + 20 = ______
  10. 32 + 20 = ______
  11. 15 + 20 = ______
  12. 21 + 10 = ______
  13. 34 + 20 = ______
  14. 85 + 20 = ______
  15. 90 − 10 = ______
  16. 45 − 10 = ______
  17. 1 × 10 = ______
  18. 5 × 10 = ______
  19. 80 + 20 = ______
  20. 87 − 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath