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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 757 · 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. 1.20% of 30 =
  2. 2.20% of 770 =
  3. 3.5% of 460 =
  4. 4.15% of 190 =
  5. 5.25% of 460 =
  6. 6.10% of 670 =
  7. 7.15% of 420 =
  8. 8.15% of 690 =
  9. 9.10% of 710 =
  10. 10.50% of 720 =
  11. 11.25% of 20 =
  12. 12.20% of 230 =
  13. 13.15% of 400 =
  14. 14.1% of 290 =
  15. 15.1% of 60 =
  16. 16.25% of 730 =
  17. 17.25% of 760 =
  18. 18.1% of 580 =
  19. 19.1% of 460 =
  20. 20.20% of 340 =
  21. 21.20% of 770 =
  22. 22.10% of 330 =
  23. 23.20% of 610 =
  24. 24.1% of 140 =
  25. 25.15% of 730 =
  26. 26.20% of 120 =
  27. 27.25% of 830 =
  28. 28.15% of 390 =
  29. 29.1% of 110 =
  30. 30.1% of 200 =
  31. 31.20% of 310 =
  32. 32.20% of 900 =
  33. 33.5% of 630 =
  34. 34.10% of 190 =
  35. 35.5% of 580 =
  36. 36.25% of 120 =
  37. 37.10% of 570 =
  38. 38.10% of 370 =
  39. 39.10% of 360 =
  40. 40.1% of 520 =

Answer key

  1. 6
  2. 154
  3. 23
  4. 28.5
  5. 115
  6. 67
  7. 63
  8. 103.5
  9. 71
  10. 360
  11. 5
  12. 46
  13. 60
  14. 2.9
  15. 0.6
  16. 182.5
  17. 190
  18. 5.8
  19. 4.6
  20. 68
  21. 154
  22. 33
  23. 122
  24. 1.4
  25. 109.5
  26. 24
  27. 207.5
  28. 58.5
  29. 1.1
  30. 2
  31. 62
  32. 180
  33. 31.5
  34. 19
  35. 29
  36. 30
  37. 57
  38. 37
  39. 36
  40. 5.2

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