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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 567 · 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. 1.15% of 40 =
  2. 2.1% of 350 =
  3. 3.1% of 570 =
  4. 4.50% of 720 =
  5. 5.20% of 860 =
  6. 6.15% of 830 =
  7. 7.50% of 870 =
  8. 8.1% of 740 =
  9. 9.20% of 300 =
  10. 10.50% of 830 =
  11. 11.20% of 340 =
  12. 12.10% of 210 =
  13. 13.25% of 710 =
  14. 14.50% of 820 =
  15. 15.50% of 540 =
  16. 16.5% of 350 =
  17. 17.5% of 80 =
  18. 18.5% of 720 =
  19. 19.15% of 90 =
  20. 20.50% of 20 =
  21. 21.5% of 280 =
  22. 22.20% of 260 =
  23. 23.50% of 430 =
  24. 24.50% of 810 =
  25. 25.5% of 400 =
  26. 26.10% of 100 =
  27. 27.1% of 250 =
  28. 28.20% of 610 =
  29. 29.10% of 60 =
  30. 30.25% of 670 =
  31. 31.1% of 160 =
  32. 32.5% of 40 =
  33. 33.20% of 640 =
  34. 34.1% of 730 =
  35. 35.50% of 70 =
  36. 36.5% of 690 =
  37. 37.20% of 680 =
  38. 38.25% of 310 =
  39. 39.5% of 340 =
  40. 40.5% of 100 =

Answer key

  1. 6
  2. 3.5
  3. 5.7
  4. 360
  5. 172
  6. 124.5
  7. 435
  8. 7.4
  9. 60
  10. 415
  11. 68
  12. 21
  13. 177.5
  14. 410
  15. 270
  16. 17.5
  17. 4
  18. 36
  19. 13.5
  20. 10
  21. 14
  22. 52
  23. 215
  24. 405
  25. 20
  26. 10
  27. 2.5
  28. 122
  29. 6
  30. 167.5
  31. 1.6
  32. 2
  33. 128
  34. 7.3
  35. 35
  36. 34.5
  37. 136
  38. 77.5
  39. 17
  40. 5

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