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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 736 · 40 questions
TalentJR

The fast method (Build from 10%): 10%: divide by 10. 1%: divide by 100. 5% = half of 10%, 20% = double 10%, 15% = 10% + 5%. 50% = half, 25% = half of a half.

NameDateTime takenScore ___ / 40
  1. 1.5% of 20 =
  2. 2.20% of 360 =
  3. 3.25% of 570 =
  4. 4.50% of 120 =
  5. 5.5% of 50 =
  6. 6.20% of 70 =
  7. 7.15% of 440 =
  8. 8.5% of 530 =
  9. 9.25% of 890 =
  10. 10.1% of 810 =
  11. 11.20% of 790 =
  12. 12.25% of 160 =
  13. 13.5% of 90 =
  14. 14.1% of 640 =
  15. 15.20% of 540 =
  16. 16.25% of 720 =
  17. 17.1% of 520 =
  18. 18.25% of 70 =
  19. 19.25% of 580 =
  20. 20.1% of 850 =
  21. 21.15% of 430 =
  22. 22.5% of 590 =
  23. 23.25% of 210 =
  24. 24.1% of 80 =
  25. 25.5% of 360 =
  26. 26.15% of 360 =
  27. 27.15% of 530 =
  28. 28.5% of 680 =
  29. 29.5% of 150 =
  30. 30.50% of 520 =
  31. 31.20% of 500 =
  32. 32.10% of 100 =
  33. 33.10% of 490 =
  34. 34.1% of 780 =
  35. 35.1% of 520 =
  36. 36.10% of 300 =
  37. 37.5% of 290 =
  38. 38.5% of 800 =
  39. 39.50% of 690 =
  40. 40.5% of 290 =

Answer key

  1. 1
  2. 72
  3. 142.5
  4. 60
  5. 2.5
  6. 14
  7. 66
  8. 26.5
  9. 222.5
  10. 8.1
  11. 158
  12. 40
  13. 4.5
  14. 6.4
  15. 108
  16. 180
  17. 5.2
  18. 17.5
  19. 145
  20. 8.5
  21. 64.5
  22. 29.5
  23. 52.5
  24. 0.8
  25. 18
  26. 54
  27. 79.5
  28. 34
  29. 7.5
  30. 260
  31. 100
  32. 10
  33. 49
  34. 7.8
  35. 5.2
  36. 30
  37. 14.5
  38. 40
  39. 345
  40. 14.5

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