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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 537 · 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 310 =
  2. 2.50% of 70 =
  3. 3.1% of 770 =
  4. 4.5% of 460 =
  5. 5.10% of 650 =
  6. 6.1% of 760 =
  7. 7.15% of 850 =
  8. 8.1% of 730 =
  9. 9.50% of 590 =
  10. 10.5% of 280 =
  11. 11.5% of 400 =
  12. 12.5% of 160 =
  13. 13.10% of 470 =
  14. 14.15% of 760 =
  15. 15.20% of 730 =
  16. 16.10% of 660 =
  17. 17.1% of 490 =
  18. 18.15% of 120 =
  19. 19.20% of 790 =
  20. 20.1% of 220 =
  21. 21.25% of 180 =
  22. 22.5% of 660 =
  23. 23.25% of 580 =
  24. 24.1% of 640 =
  25. 25.50% of 100 =
  26. 26.1% of 620 =
  27. 27.5% of 140 =
  28. 28.15% of 610 =
  29. 29.20% of 550 =
  30. 30.1% of 220 =
  31. 31.10% of 800 =
  32. 32.15% of 800 =
  33. 33.50% of 220 =
  34. 34.50% of 480 =
  35. 35.10% of 100 =
  36. 36.15% of 370 =
  37. 37.5% of 470 =
  38. 38.15% of 640 =
  39. 39.1% of 670 =
  40. 40.20% of 600 =

Answer key

  1. 31
  2. 35
  3. 7.7
  4. 23
  5. 65
  6. 7.6
  7. 127.5
  8. 7.3
  9. 295
  10. 14
  11. 20
  12. 8
  13. 47
  14. 114
  15. 146
  16. 66
  17. 4.9
  18. 18
  19. 158
  20. 2.2
  21. 45
  22. 33
  23. 145
  24. 6.4
  25. 50
  26. 6.2
  27. 7
  28. 91.5
  29. 110
  30. 2.2
  31. 80
  32. 120
  33. 110
  34. 240
  35. 10
  36. 55.5
  37. 23.5
  38. 96
  39. 6.7
  40. 120

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