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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. 9 × 10 = ______
  3. 16 + 20 = ______
  4. 13 + 10 = ______
  5. 89 + 20 = ______
  6. 26 − 10 = ______
  7. 3 × 10 = ______
  8. 1 × 10 = ______
  9. 2 × 10 = ______
  10. 5 × 10 = ______
  11. 8 × 10 = ______
  12. 54 − 10 = ______
  13. 80 − 10 = ______
  14. 4 × 10 = ______
  15. 25 + 10 = ______
  16. 30 + 20 = ______
  17. 78 + 20 = ______
  18. 11 + 20 = ______
  19. 64 + 20 = ______
  20. 86 + 20 = ______