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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 458 · 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 230 =
  2. 2.20% of 550 =
  3. 3.1% of 200 =
  4. 4.10% of 630 =
  5. 5.20% of 660 =
  6. 6.25% of 160 =
  7. 7.10% of 680 =
  8. 8.10% of 240 =
  9. 9.25% of 880 =
  10. 10.5% of 50 =
  11. 11.10% of 470 =
  12. 12.20% of 320 =
  13. 13.15% of 480 =
  14. 14.5% of 330 =
  15. 15.10% of 670 =
  16. 16.20% of 520 =
  17. 17.1% of 750 =
  18. 18.5% of 730 =
  19. 19.50% of 480 =
  20. 20.5% of 830 =
  21. 21.15% of 890 =
  22. 22.15% of 230 =
  23. 23.20% of 100 =
  24. 24.15% of 600 =
  25. 25.10% of 700 =
  26. 26.50% of 510 =
  27. 27.5% of 140 =
  28. 28.10% of 460 =
  29. 29.25% of 540 =
  30. 30.20% of 190 =
  31. 31.25% of 30 =
  32. 32.15% of 620 =
  33. 33.1% of 430 =
  34. 34.5% of 840 =
  35. 35.20% of 460 =
  36. 36.25% of 240 =
  37. 37.50% of 860 =
  38. 38.25% of 270 =
  39. 39.20% of 530 =
  40. 40.5% of 190 =

Answer key

  1. 115
  2. 110
  3. 2
  4. 63
  5. 132
  6. 40
  7. 68
  8. 24
  9. 220
  10. 2.5
  11. 47
  12. 64
  13. 72
  14. 16.5
  15. 67
  16. 104
  17. 7.5
  18. 36.5
  19. 240
  20. 41.5
  21. 133.5
  22. 34.5
  23. 20
  24. 90
  25. 70
  26. 255
  27. 7
  28. 46
  29. 135
  30. 38
  31. 7.5
  32. 93
  33. 4.3
  34. 42
  35. 92
  36. 60
  37. 430
  38. 67.5
  39. 106
  40. 9.5

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