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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 492 · 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. 1.5% of 750 =
  2. 2.1% of 520 =
  3. 3.5% of 890 =
  4. 4.10% of 450 =
  5. 5.5% of 670 =
  6. 6.25% of 430 =
  7. 7.20% of 30 =
  8. 8.10% of 590 =
  9. 9.10% of 300 =
  10. 10.5% of 260 =
  11. 11.10% of 820 =
  12. 12.25% of 120 =
  13. 13.20% of 260 =
  14. 14.25% of 360 =
  15. 15.5% of 510 =
  16. 16.20% of 90 =
  17. 17.20% of 520 =
  18. 18.25% of 280 =
  19. 19.15% of 730 =
  20. 20.10% of 620 =
  21. 21.5% of 340 =
  22. 22.50% of 260 =
  23. 23.15% of 730 =
  24. 24.1% of 760 =
  25. 25.15% of 550 =
  26. 26.1% of 230 =
  27. 27.50% of 260 =
  28. 28.15% of 60 =
  29. 29.20% of 190 =
  30. 30.5% of 220 =
  31. 31.50% of 580 =
  32. 32.10% of 290 =
  33. 33.5% of 120 =
  34. 34.50% of 110 =
  35. 35.1% of 450 =
  36. 36.50% of 500 =
  37. 37.15% of 270 =
  38. 38.25% of 720 =
  39. 39.20% of 640 =
  40. 40.25% of 840 =

Answer key

  1. 37.5
  2. 5.2
  3. 44.5
  4. 45
  5. 33.5
  6. 107.5
  7. 6
  8. 59
  9. 30
  10. 13
  11. 82
  12. 30
  13. 52
  14. 90
  15. 25.5
  16. 18
  17. 104
  18. 70
  19. 109.5
  20. 62
  21. 17
  22. 130
  23. 109.5
  24. 7.6
  25. 82.5
  26. 2.3
  27. 130
  28. 9
  29. 38
  30. 11
  31. 290
  32. 29
  33. 6
  34. 55
  35. 4.5
  36. 250
  37. 40.5
  38. 180
  39. 128
  40. 210

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