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. 51 + 20 = ______
  2. 5 × 10 = ______
  3. 66 + 10 = ______
  4. 6 × 10 = ______
  5. 1 × 10 = ______
  6. 50 + 20 = ______
  7. 7 × 10 = ______
  8. 29 − 10 = ______
  9. 9 × 10 = ______
  10. 67 − 10 = ______
  11. 34 + 10 = ______
  12. 54 + 20 = ______
  13. 79 − 10 = ______
  14. 71 + 20 = ______
  15. 32 + 20 = ______
  16. 39 + 10 = ______
  17. 83 + 20 = ______
  18. 56 + 20 = ______
  19. 4 × 10 = ______
  20. 44 − 10 = ______
Mental Math Worksheet — Free Printable with Answer Key | WaffleMath