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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 773 · 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 760 =
  2. 2.25% of 280 =
  3. 3.1% of 620 =
  4. 4.5% of 60 =
  5. 5.5% of 320 =
  6. 6.10% of 60 =
  7. 7.5% of 260 =
  8. 8.15% of 170 =
  9. 9.5% of 650 =
  10. 10.15% of 500 =
  11. 11.50% of 50 =
  12. 12.10% of 730 =
  13. 13.20% of 520 =
  14. 14.1% of 370 =
  15. 15.25% of 230 =
  16. 16.15% of 560 =
  17. 17.1% of 640 =
  18. 18.20% of 370 =
  19. 19.1% of 420 =
  20. 20.5% of 520 =
  21. 21.10% of 590 =
  22. 22.10% of 120 =
  23. 23.5% of 830 =
  24. 24.50% of 240 =
  25. 25.10% of 740 =
  26. 26.10% of 20 =
  27. 27.20% of 120 =
  28. 28.15% of 420 =
  29. 29.10% of 580 =
  30. 30.1% of 160 =
  31. 31.25% of 470 =
  32. 32.5% of 270 =
  33. 33.20% of 770 =
  34. 34.10% of 360 =
  35. 35.5% of 190 =
  36. 36.50% of 720 =
  37. 37.50% of 260 =
  38. 38.50% of 590 =
  39. 39.50% of 340 =
  40. 40.15% of 530 =

Answer key

  1. 152
  2. 70
  3. 6.2
  4. 3
  5. 16
  6. 6
  7. 13
  8. 25.5
  9. 32.5
  10. 75
  11. 25
  12. 73
  13. 104
  14. 3.7
  15. 57.5
  16. 84
  17. 6.4
  18. 74
  19. 4.2
  20. 26
  21. 59
  22. 12
  23. 41.5
  24. 120
  25. 74
  26. 2
  27. 24
  28. 63
  29. 58
  30. 1.6
  31. 117.5
  32. 13.5
  33. 154
  34. 36
  35. 9.5
  36. 360
  37. 130
  38. 295
  39. 170
  40. 79.5

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