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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 733 · 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. 1.50% of 280 =
  2. 2.1% of 800 =
  3. 3.20% of 460 =
  4. 4.5% of 230 =
  5. 5.10% of 560 =
  6. 6.1% of 750 =
  7. 7.25% of 60 =
  8. 8.25% of 630 =
  9. 9.20% of 70 =
  10. 10.25% of 280 =
  11. 11.15% of 230 =
  12. 12.5% of 220 =
  13. 13.5% of 780 =
  14. 14.5% of 30 =
  15. 15.20% of 630 =
  16. 16.10% of 720 =
  17. 17.1% of 370 =
  18. 18.25% of 240 =
  19. 19.50% of 750 =
  20. 20.1% of 40 =
  21. 21.20% of 90 =
  22. 22.25% of 320 =
  23. 23.1% of 780 =
  24. 24.15% of 550 =
  25. 25.25% of 560 =
  26. 26.10% of 40 =
  27. 27.5% of 360 =
  28. 28.20% of 560 =
  29. 29.1% of 530 =
  30. 30.10% of 260 =
  31. 31.25% of 250 =
  32. 32.50% of 900 =
  33. 33.25% of 670 =
  34. 34.1% of 410 =
  35. 35.20% of 290 =
  36. 36.25% of 710 =
  37. 37.10% of 170 =
  38. 38.10% of 50 =
  39. 39.15% of 370 =
  40. 40.50% of 240 =

Answer key

  1. 140
  2. 8
  3. 92
  4. 11.5
  5. 56
  6. 7.5
  7. 15
  8. 157.5
  9. 14
  10. 70
  11. 34.5
  12. 11
  13. 39
  14. 1.5
  15. 126
  16. 72
  17. 3.7
  18. 60
  19. 375
  20. 0.4
  21. 18
  22. 80
  23. 7.8
  24. 82.5
  25. 140
  26. 4
  27. 18
  28. 112
  29. 5.3
  30. 26
  31. 62.5
  32. 450
  33. 167.5
  34. 4.1
  35. 58
  36. 177.5
  37. 17
  38. 5
  39. 55.5
  40. 120

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