FreeMath
Grade 4medium

Mental Math Speed Test

Test your mental math skills with this speed test featuring calculations designed for quick mental computation. Use strategies like making tens and friendly numbers.

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All 20 Practice Problems

Every question in this set. Solve them on paper, or use the interactive tool above for instant feedback and hints.

  1. 1.25 + 75 = ?
  2. 2.100 - 36 = ?
  3. 3.50 × 2 = ?
  4. 4.120 ÷ 4 = ?
  5. 5.45 + 55 = ?
  6. 6.200 - 75 = ?
  7. 7.25 × 4 = ?
  8. 8.150 ÷ 3 = ?
  9. 9.38 + 62 = ?
  10. 10.500 - 125 = ?
  11. 11.15 × 6 = ?
  12. 12.240 ÷ 8 = ?
  13. 13.67 + 33 = ?
  14. 14.300 - 89 = ?
  15. 15.12 × 5 = ?
  16. 16.180 ÷ 6 = ?
  17. 17.84 + 16 = ?
  18. 18.1000 - 250 = ?
  19. 19.20 × 5 = ?
  20. 20.200 ÷ 5 = ?
Show answer key
  1. 1.25 + 75 = ? Answer: 100
  2. 2.100 - 36 = ? Answer: 64
  3. 3.50 × 2 = ? Answer: 100
  4. 4.120 ÷ 4 = ? Answer: 30
  5. 5.45 + 55 = ? Answer: 100
  6. 6.200 - 75 = ? Answer: 125
  7. 7.25 × 4 = ? Answer: 100
  8. 8.150 ÷ 3 = ? Answer: 50
  9. 9.38 + 62 = ? Answer: 100
  10. 10.500 - 125 = ? Answer: 375
  11. 11.15 × 6 = ? Answer: 90
  12. 12.240 ÷ 8 = ? Answer: 30
  13. 13.67 + 33 = ? Answer: 100
  14. 14.300 - 89 = ? Answer: 211
  15. 15.12 × 5 = ? Answer: 60
  16. 16.180 ÷ 6 = ? Answer: 30
  17. 17.84 + 16 = ? Answer: 100
  18. 18.1000 - 250 = ? Answer: 750
  19. 19.20 × 5 = ? Answer: 100
  20. 20.200 ÷ 5 = ? Answer: 40

About This Practice

This timed test includes 20 mental math problems. Strong mental math skills make everyday calculations faster and build mathematical confidence.

Want more practice? See all Grade 4 practice →