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. 1 × 10 = ______
  2. 7 × 10 = ______
  3. 15 + 10 = ______
  4. 45 + 10 = ______
  5. 66 + 20 = ______
  6. 31 + 20 = ______
  7. 86 + 10 = ______
  8. 4 × 10 = ______
  9. 88 + 10 = ______
  10. 6 × 10 = ______
  11. 29 − 10 = ______
  12. 58 + 10 = ______
  13. 87 − 10 = ______
  14. 57 − 10 = ______
  15. 88 − 10 = ______
  16. 48 + 10 = ______
  17. 83 + 20 = ______
  18. 36 + 20 = ______
  19. 2 × 10 = ______
  20. 9 × 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath