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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 566 · 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. 1.25% of 860 =
  2. 2.15% of 200 =
  3. 3.20% of 190 =
  4. 4.50% of 660 =
  5. 5.50% of 880 =
  6. 6.10% of 30 =
  7. 7.15% of 460 =
  8. 8.5% of 40 =
  9. 9.25% of 270 =
  10. 10.10% of 170 =
  11. 11.15% of 820 =
  12. 12.20% of 150 =
  13. 13.50% of 410 =
  14. 14.10% of 830 =
  15. 15.25% of 270 =
  16. 16.15% of 110 =
  17. 17.50% of 660 =
  18. 18.10% of 670 =
  19. 19.20% of 270 =
  20. 20.25% of 270 =
  21. 21.20% of 860 =
  22. 22.5% of 530 =
  23. 23.5% of 50 =
  24. 24.10% of 170 =
  25. 25.25% of 640 =
  26. 26.10% of 470 =
  27. 27.15% of 560 =
  28. 28.25% of 720 =
  29. 29.10% of 340 =
  30. 30.5% of 460 =
  31. 31.25% of 770 =
  32. 32.25% of 410 =
  33. 33.50% of 590 =
  34. 34.25% of 470 =
  35. 35.25% of 100 =
  36. 36.20% of 330 =
  37. 37.15% of 130 =
  38. 38.25% of 780 =
  39. 39.15% of 590 =
  40. 40.50% of 240 =

Answer key

  1. 215
  2. 30
  3. 38
  4. 330
  5. 440
  6. 3
  7. 69
  8. 2
  9. 67.5
  10. 17
  11. 123
  12. 30
  13. 205
  14. 83
  15. 67.5
  16. 16.5
  17. 330
  18. 67
  19. 54
  20. 67.5
  21. 172
  22. 26.5
  23. 2.5
  24. 17
  25. 160
  26. 47
  27. 84
  28. 180
  29. 34
  30. 23
  31. 192.5
  32. 102.5
  33. 295
  34. 117.5
  35. 25
  36. 66
  37. 19.5
  38. 195
  39. 88.5
  40. 120

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