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. 71 + 10 = ______
  2. 89 + 10 = ______
  3. 67 + 20 = ______
  4. 96 − 10 = ______
  5. 77 − 10 = ______
  6. 35 + 20 = ______
  7. 85 − 10 = ______
  8. 6 × 10 = ______
  9. 54 + 10 = ______
  10. 74 − 10 = ______
  11. 2 × 10 = ______
  12. 35 + 10 = ______
  13. 30 + 20 = ______
  14. 73 + 10 = ______
  15. 3 × 10 = ______
  16. 14 + 10 = ______
  17. 51 + 10 = ______
  18. 27 + 10 = ______
  19. 79 + 10 = ______
  20. 59 + 20 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath