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. 29 + 10 = ______
  2. 4 × 10 = ______
  3. 41 − 10 = ______
  4. 85 + 20 = ______
  5. 40 − 10 = ______
  6. 84 + 10 = ______
  7. 2 × 10 = ______
  8. 9 × 10 = ______
  9. 21 + 20 = ______
  10. 6 × 10 = ______
  11. 66 + 20 = ______
  12. 51 − 10 = ______
  13. 53 + 10 = ______
  14. 54 + 10 = ______
  15. 75 + 10 = ______
  16. 59 + 20 = ______
  17. 75 + 20 = ______
  18. 72 + 20 = ______
  19. 39 + 20 = ______
  20. 67 − 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath