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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 772 · 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. 1.50% of 150 =
  2. 2.50% of 700 =
  3. 3.20% of 230 =
  4. 4.15% of 560 =
  5. 5.25% of 800 =
  6. 6.50% of 100 =
  7. 7.10% of 400 =
  8. 8.15% of 130 =
  9. 9.5% of 240 =
  10. 10.10% of 400 =
  11. 11.20% of 700 =
  12. 12.10% of 150 =
  13. 13.10% of 350 =
  14. 14.5% of 190 =
  15. 15.10% of 240 =
  16. 16.50% of 440 =
  17. 17.25% of 310 =
  18. 18.5% of 790 =
  19. 19.10% of 610 =
  20. 20.20% of 900 =
  21. 21.15% of 330 =
  22. 22.5% of 860 =
  23. 23.10% of 890 =
  24. 24.15% of 770 =
  25. 25.5% of 80 =
  26. 26.1% of 150 =
  27. 27.5% of 580 =
  28. 28.25% of 310 =
  29. 29.1% of 120 =
  30. 30.5% of 220 =
  31. 31.1% of 30 =
  32. 32.50% of 360 =
  33. 33.15% of 300 =
  34. 34.20% of 470 =
  35. 35.50% of 70 =
  36. 36.50% of 760 =
  37. 37.10% of 50 =
  38. 38.15% of 400 =
  39. 39.10% of 180 =
  40. 40.10% of 530 =

Answer key

  1. 75
  2. 350
  3. 46
  4. 84
  5. 200
  6. 50
  7. 40
  8. 19.5
  9. 12
  10. 40
  11. 140
  12. 15
  13. 35
  14. 9.5
  15. 24
  16. 220
  17. 77.5
  18. 39.5
  19. 61
  20. 180
  21. 49.5
  22. 43
  23. 89
  24. 115.5
  25. 4
  26. 1.5
  27. 29
  28. 77.5
  29. 1.2
  30. 11
  31. 0.3
  32. 180
  33. 45
  34. 94
  35. 35
  36. 380
  37. 5
  38. 60
  39. 18
  40. 53

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