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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 365 · 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 110 =
  2. 2.1% of 220 =
  3. 3.5% of 600 =
  4. 4.15% of 790 =
  5. 5.50% of 830 =
  6. 6.5% of 100 =
  7. 7.5% of 180 =
  8. 8.25% of 560 =
  9. 9.5% of 320 =
  10. 10.1% of 400 =
  11. 11.20% of 580 =
  12. 12.10% of 460 =
  13. 13.5% of 520 =
  14. 14.10% of 80 =
  15. 15.5% of 890 =
  16. 16.25% of 440 =
  17. 17.15% of 310 =
  18. 18.1% of 420 =
  19. 19.1% of 170 =
  20. 20.5% of 820 =
  21. 21.20% of 310 =
  22. 22.10% of 670 =
  23. 23.25% of 870 =
  24. 24.5% of 790 =
  25. 25.20% of 90 =
  26. 26.50% of 540 =
  27. 27.10% of 300 =
  28. 28.5% of 520 =
  29. 29.50% of 390 =
  30. 30.10% of 100 =
  31. 31.10% of 20 =
  32. 32.25% of 380 =
  33. 33.10% of 660 =
  34. 34.5% of 590 =
  35. 35.20% of 470 =
  36. 36.10% of 460 =
  37. 37.50% of 160 =
  38. 38.25% of 150 =
  39. 39.5% of 150 =
  40. 40.5% of 180 =

Answer key

  1. 5.5
  2. 2.2
  3. 30
  4. 118.5
  5. 415
  6. 5
  7. 9
  8. 140
  9. 16
  10. 4
  11. 116
  12. 46
  13. 26
  14. 8
  15. 44.5
  16. 110
  17. 46.5
  18. 4.2
  19. 1.7
  20. 41
  21. 62
  22. 67
  23. 217.5
  24. 39.5
  25. 18
  26. 270
  27. 30
  28. 26
  29. 195
  30. 10
  31. 2
  32. 95
  33. 66
  34. 29.5
  35. 94
  36. 46
  37. 80
  38. 37.5
  39. 7.5
  40. 9

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