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. 26 + 20 = ______
  2. 25 + 10 = ______
  3. 78 − 10 = ______
  4. 33 + 20 = ______
  5. 57 + 10 = ______
  6. 85 − 10 = ______
  7. 73 + 20 = ______
  8. 80 + 20 = ______
  9. 57 + 20 = ______
  10. 86 − 10 = ______
  11. 35 + 10 = ______
  12. 2 × 10 = ______
  13. 65 − 10 = ______
  14. 52 − 10 = ______
  15. 43 + 20 = ______
  16. 63 + 20 = ______
  17. 81 + 20 = ______
  18. 59 − 10 = ______
  19. 7 × 10 = ______
  20. 23 + 20 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath