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. 68 − 10 = ______
  2. 5 × 10 = ______
  3. 40 + 10 = ______
  4. 71 − 10 = ______
  5. 3 × 10 = ______
  6. 77 + 10 = ______
  7. 56 − 10 = ______
  8. 15 + 10 = ______
  9. 1 × 10 = ______
  10. 85 − 10 = ______
  11. 7 × 10 = ______
  12. 24 + 10 = ______
  13. 15 + 20 = ______
  14. 24 + 20 = ______
  15. 73 − 10 = ______
  16. 76 + 20 = ______
  17. 40 + 20 = ______
  18. 45 − 10 = ______
  19. 12 + 20 = ______
  20. 51 + 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath