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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 59 · 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 440 =
  2. 2.25% of 50 =
  3. 3.25% of 800 =
  4. 4.50% of 850 =
  5. 5.10% of 850 =
  6. 6.5% of 730 =
  7. 7.50% of 790 =
  8. 8.50% of 230 =
  9. 9.20% of 650 =
  10. 10.5% of 190 =
  11. 11.50% of 30 =
  12. 12.15% of 870 =
  13. 13.50% of 210 =
  14. 14.20% of 30 =
  15. 15.10% of 350 =
  16. 16.15% of 490 =
  17. 17.20% of 100 =
  18. 18.25% of 870 =
  19. 19.50% of 610 =
  20. 20.10% of 510 =
  21. 21.25% of 20 =
  22. 22.10% of 110 =
  23. 23.5% of 810 =
  24. 24.15% of 130 =
  25. 25.25% of 670 =
  26. 26.1% of 650 =
  27. 27.5% of 160 =
  28. 28.5% of 740 =
  29. 29.1% of 100 =
  30. 30.10% of 140 =
  31. 31.10% of 580 =
  32. 32.50% of 180 =
  33. 33.25% of 560 =
  34. 34.20% of 250 =
  35. 35.5% of 360 =
  36. 36.15% of 470 =
  37. 37.25% of 530 =
  38. 38.10% of 260 =
  39. 39.10% of 820 =
  40. 40.15% of 420 =

Answer key

  1. 44
  2. 12.5
  3. 200
  4. 425
  5. 85
  6. 36.5
  7. 395
  8. 115
  9. 130
  10. 9.5
  11. 15
  12. 130.5
  13. 105
  14. 6
  15. 35
  16. 73.5
  17. 20
  18. 217.5
  19. 305
  20. 51
  21. 5
  22. 11
  23. 40.5
  24. 19.5
  25. 167.5
  26. 6.5
  27. 8
  28. 37
  29. 1
  30. 14
  31. 58
  32. 90
  33. 140
  34. 50
  35. 18
  36. 70.5
  37. 132.5
  38. 26
  39. 82
  40. 63

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