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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 543 · 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 200 =
  2. 2.10% of 60 =
  3. 3.25% of 360 =
  4. 4.25% of 780 =
  5. 5.10% of 750 =
  6. 6.5% of 730 =
  7. 7.1% of 550 =
  8. 8.10% of 670 =
  9. 9.10% of 760 =
  10. 10.50% of 40 =
  11. 11.20% of 510 =
  12. 12.15% of 610 =
  13. 13.20% of 160 =
  14. 14.25% of 280 =
  15. 15.25% of 300 =
  16. 16.20% of 200 =
  17. 17.10% of 420 =
  18. 18.20% of 760 =
  19. 19.10% of 760 =
  20. 20.20% of 680 =
  21. 21.1% of 890 =
  22. 22.1% of 470 =
  23. 23.20% of 230 =
  24. 24.50% of 450 =
  25. 25.10% of 610 =
  26. 26.25% of 630 =
  27. 27.5% of 520 =
  28. 28.15% of 610 =
  29. 29.5% of 430 =
  30. 30.25% of 620 =
  31. 31.10% of 540 =
  32. 32.20% of 100 =
  33. 33.50% of 330 =
  34. 34.50% of 200 =
  35. 35.50% of 310 =
  36. 36.15% of 20 =
  37. 37.25% of 350 =
  38. 38.15% of 170 =
  39. 39.5% of 70 =
  40. 40.1% of 140 =

Answer key

  1. 30
  2. 6
  3. 90
  4. 195
  5. 75
  6. 36.5
  7. 5.5
  8. 67
  9. 76
  10. 20
  11. 102
  12. 91.5
  13. 32
  14. 70
  15. 75
  16. 40
  17. 42
  18. 152
  19. 76
  20. 136
  21. 8.9
  22. 4.7
  23. 46
  24. 225
  25. 61
  26. 157.5
  27. 26
  28. 91.5
  29. 21.5
  30. 155
  31. 54
  32. 20
  33. 165
  34. 100
  35. 155
  36. 3
  37. 87.5
  38. 25.5
  39. 3.5
  40. 1.4

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