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 + 20 = ______
  2. 88 − 10 = ______
  3. 17 + 10 = ______
  4. 61 − 10 = ______
  5. 20 + 10 = ______
  6. 49 − 10 = ______
  7. 72 − 10 = ______
  8. 3 × 10 = ______
  9. 83 + 10 = ______
  10. 26 − 10 = ______
  11. 28 + 10 = ______
  12. 85 + 20 = ______
  13. 56 − 10 = ______
  14. 88 + 20 = ______
  15. 2 × 10 = ______
  16. 57 + 10 = ______
  17. 26 + 20 = ______
  18. 69 + 20 = ______
  19. 51 + 20 = ______
  20. 67 − 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath