WaffleMath LogoWaffleMath
K12345678HSBrowse standardsBrowse worksheetsTeacher resources

Mental Math Worksheet

Recommended for 1st Grade — 5th Grade

More Mental Math GamesAll Worksheets
New Worksheet

Mental Math Worksheet

Name: ____________________Date: ____________

Instructions: Using mental strategies like making ten, doubling, and compensation to compute quickly.

20 problems

  1. 87 − 10 = ______
  2. 84 − 10 = ______
  3. 82 − 10 = ______
  4. 58 + 20 = ______
  5. 46 + 20 = ______
  6. 20 + 20 = ______
  7. 8 × 10 = ______
  8. 40 + 20 = ______
  9. 56 + 10 = ______
  10. 85 + 20 = ______
  11. 81 − 10 = ______
  12. 58 − 10 = ______
  13. 51 − 10 = ______
  14. 66 + 10 = ______
  15. 22 + 10 = ______
  16. 19 + 20 = ______
  17. 3 × 10 = ______
  18. 43 + 20 = ______
  19. 6 × 10 = ______
  20. 24 − 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath