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. 78 + 10 = ______
  3. 60 + 10 = ______
  4. 5 × 10 = ______
  5. 47 − 10 = ______
  6. 3 × 10 = ______
  7. 55 + 20 = ______
  8. 44 + 20 = ______
  9. 20 + 20 = ______
  10. 31 + 20 = ______
  11. 75 − 10 = ______
  12. 43 + 20 = ______
  13. 39 + 20 = ______
  14. 76 + 20 = ______
  15. 4 × 10 = ______
  16. 78 + 20 = ______
  17. 74 − 10 = ______
  18. 65 − 10 = ______
  19. 45 + 20 = ______
  20. 27 + 20 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath