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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 560 · 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 160 =
  2. 2.1% of 190 =
  3. 3.15% of 730 =
  4. 4.50% of 620 =
  5. 5.1% of 230 =
  6. 6.25% of 220 =
  7. 7.15% of 190 =
  8. 8.50% of 280 =
  9. 9.5% of 740 =
  10. 10.5% of 130 =
  11. 11.25% of 870 =
  12. 12.5% of 440 =
  13. 13.20% of 870 =
  14. 14.20% of 250 =
  15. 15.5% of 700 =
  16. 16.5% of 570 =
  17. 17.20% of 150 =
  18. 18.20% of 460 =
  19. 19.50% of 640 =
  20. 20.5% of 420 =
  21. 21.5% of 360 =
  22. 22.10% of 270 =
  23. 23.10% of 440 =
  24. 24.50% of 700 =
  25. 25.25% of 400 =
  26. 26.10% of 830 =
  27. 27.10% of 410 =
  28. 28.5% of 330 =
  29. 29.10% of 110 =
  30. 30.5% of 500 =
  31. 31.5% of 170 =
  32. 32.20% of 530 =
  33. 33.5% of 850 =
  34. 34.50% of 600 =
  35. 35.20% of 740 =
  36. 36.5% of 390 =
  37. 37.20% of 390 =
  38. 38.25% of 260 =
  39. 39.15% of 260 =
  40. 40.5% of 620 =

Answer key

  1. 80
  2. 1.9
  3. 109.5
  4. 310
  5. 2.3
  6. 55
  7. 28.5
  8. 140
  9. 37
  10. 6.5
  11. 217.5
  12. 22
  13. 174
  14. 50
  15. 35
  16. 28.5
  17. 30
  18. 92
  19. 320
  20. 21
  21. 18
  22. 27
  23. 44
  24. 350
  25. 100
  26. 83
  27. 41
  28. 16.5
  29. 11
  30. 25
  31. 8.5
  32. 106
  33. 42.5
  34. 300
  35. 148
  36. 19.5
  37. 78
  38. 65
  39. 39
  40. 31

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