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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 124 · 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. 1.25% of 710 =
  2. 2.25% of 680 =
  3. 3.5% of 120 =
  4. 4.50% of 90 =
  5. 5.50% of 210 =
  6. 6.15% of 400 =
  7. 7.5% of 170 =
  8. 8.20% of 370 =
  9. 9.5% of 160 =
  10. 10.10% of 470 =
  11. 11.50% of 400 =
  12. 12.10% of 320 =
  13. 13.15% of 700 =
  14. 14.20% of 40 =
  15. 15.25% of 860 =
  16. 16.20% of 190 =
  17. 17.5% of 370 =
  18. 18.15% of 320 =
  19. 19.5% of 650 =
  20. 20.10% of 410 =
  21. 21.10% of 580 =
  22. 22.20% of 20 =
  23. 23.50% of 590 =
  24. 24.20% of 770 =
  25. 25.15% of 20 =
  26. 26.15% of 820 =
  27. 27.20% of 110 =
  28. 28.15% of 610 =
  29. 29.20% of 290 =
  30. 30.5% of 260 =
  31. 31.15% of 210 =
  32. 32.20% of 210 =
  33. 33.20% of 220 =
  34. 34.10% of 190 =
  35. 35.5% of 780 =
  36. 36.25% of 750 =
  37. 37.50% of 500 =
  38. 38.10% of 150 =
  39. 39.15% of 870 =
  40. 40.50% of 730 =

Answer key

  1. 177.5
  2. 170
  3. 6
  4. 45
  5. 105
  6. 60
  7. 8.5
  8. 74
  9. 8
  10. 47
  11. 200
  12. 32
  13. 105
  14. 8
  15. 215
  16. 38
  17. 18.5
  18. 48
  19. 32.5
  20. 41
  21. 58
  22. 4
  23. 295
  24. 154
  25. 3
  26. 123
  27. 22
  28. 91.5
  29. 58
  30. 13
  31. 31.5
  32. 42
  33. 44
  34. 19
  35. 39
  36. 187.5
  37. 250
  38. 15
  39. 130.5
  40. 365

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