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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 784 · 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 380 =
  2. 2.25% of 630 =
  3. 3.50% of 550 =
  4. 4.5% of 260 =
  5. 5.50% of 570 =
  6. 6.25% of 560 =
  7. 7.5% of 510 =
  8. 8.5% of 600 =
  9. 9.10% of 70 =
  10. 10.25% of 320 =
  11. 11.25% of 40 =
  12. 12.5% of 490 =
  13. 13.20% of 60 =
  14. 14.50% of 430 =
  15. 15.5% of 150 =
  16. 16.20% of 580 =
  17. 17.1% of 180 =
  18. 18.20% of 200 =
  19. 19.25% of 230 =
  20. 20.10% of 160 =
  21. 21.10% of 710 =
  22. 22.5% of 360 =
  23. 23.1% of 220 =
  24. 24.10% of 630 =
  25. 25.10% of 380 =
  26. 26.15% of 490 =
  27. 27.20% of 140 =
  28. 28.5% of 190 =
  29. 29.5% of 290 =
  30. 30.50% of 360 =
  31. 31.10% of 100 =
  32. 32.20% of 420 =
  33. 33.20% of 720 =
  34. 34.10% of 780 =
  35. 35.10% of 150 =
  36. 36.50% of 40 =
  37. 37.20% of 190 =
  38. 38.5% of 670 =
  39. 39.20% of 480 =
  40. 40.20% of 720 =

Answer key

  1. 19
  2. 157.5
  3. 275
  4. 13
  5. 285
  6. 140
  7. 25.5
  8. 30
  9. 7
  10. 80
  11. 10
  12. 24.5
  13. 12
  14. 215
  15. 7.5
  16. 116
  17. 1.8
  18. 40
  19. 57.5
  20. 16
  21. 71
  22. 18
  23. 2.2
  24. 63
  25. 38
  26. 73.5
  27. 28
  28. 9.5
  29. 14.5
  30. 180
  31. 10
  32. 84
  33. 144
  34. 78
  35. 15
  36. 20
  37. 38
  38. 33.5
  39. 96
  40. 144

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