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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 545 · 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. 1.10% of 590 =
  2. 2.10% of 530 =
  3. 3.25% of 40 =
  4. 4.15% of 470 =
  5. 5.10% of 540 =
  6. 6.5% of 700 =
  7. 7.1% of 120 =
  8. 8.25% of 230 =
  9. 9.20% of 250 =
  10. 10.25% of 680 =
  11. 11.20% of 560 =
  12. 12.15% of 30 =
  13. 13.20% of 870 =
  14. 14.10% of 180 =
  15. 15.25% of 220 =
  16. 16.1% of 800 =
  17. 17.1% of 590 =
  18. 18.50% of 790 =
  19. 19.1% of 240 =
  20. 20.5% of 690 =
  21. 21.20% of 280 =
  22. 22.1% of 290 =
  23. 23.50% of 840 =
  24. 24.25% of 500 =
  25. 25.50% of 160 =
  26. 26.5% of 500 =
  27. 27.5% of 80 =
  28. 28.10% of 110 =
  29. 29.25% of 800 =
  30. 30.50% of 450 =
  31. 31.5% of 760 =
  32. 32.50% of 720 =
  33. 33.5% of 510 =
  34. 34.15% of 520 =
  35. 35.15% of 810 =
  36. 36.1% of 760 =
  37. 37.5% of 580 =
  38. 38.25% of 240 =
  39. 39.25% of 130 =
  40. 40.1% of 780 =

Answer key

  1. 59
  2. 53
  3. 10
  4. 70.5
  5. 54
  6. 35
  7. 1.2
  8. 57.5
  9. 50
  10. 170
  11. 112
  12. 4.5
  13. 174
  14. 18
  15. 55
  16. 8
  17. 5.9
  18. 395
  19. 2.4
  20. 34.5
  21. 56
  22. 2.9
  23. 420
  24. 125
  25. 80
  26. 25
  27. 4
  28. 11
  29. 200
  30. 225
  31. 38
  32. 360
  33. 25.5
  34. 78
  35. 121.5
  36. 7.6
  37. 29
  38. 60
  39. 32.5
  40. 7.8

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