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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 664 · 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 580 =
  2. 2.15% of 280 =
  3. 3.50% of 210 =
  4. 4.15% of 180 =
  5. 5.5% of 200 =
  6. 6.25% of 400 =
  7. 7.25% of 40 =
  8. 8.5% of 460 =
  9. 9.5% of 500 =
  10. 10.25% of 80 =
  11. 11.20% of 810 =
  12. 12.20% of 480 =
  13. 13.20% of 680 =
  14. 14.1% of 500 =
  15. 15.5% of 670 =
  16. 16.20% of 710 =
  17. 17.5% of 250 =
  18. 18.1% of 760 =
  19. 19.10% of 590 =
  20. 20.25% of 100 =
  21. 21.1% of 530 =
  22. 22.10% of 880 =
  23. 23.10% of 800 =
  24. 24.20% of 610 =
  25. 25.50% of 580 =
  26. 26.15% of 250 =
  27. 27.20% of 110 =
  28. 28.50% of 390 =
  29. 29.5% of 350 =
  30. 30.10% of 130 =
  31. 31.15% of 70 =
  32. 32.20% of 580 =
  33. 33.1% of 90 =
  34. 34.5% of 370 =
  35. 35.1% of 30 =
  36. 36.5% of 640 =
  37. 37.5% of 500 =
  38. 38.10% of 30 =
  39. 39.50% of 580 =
  40. 40.50% of 810 =

Answer key

  1. 29
  2. 42
  3. 105
  4. 27
  5. 10
  6. 100
  7. 10
  8. 23
  9. 25
  10. 20
  11. 162
  12. 96
  13. 136
  14. 5
  15. 33.5
  16. 142
  17. 12.5
  18. 7.6
  19. 59
  20. 25
  21. 5.3
  22. 88
  23. 80
  24. 122
  25. 290
  26. 37.5
  27. 22
  28. 195
  29. 17.5
  30. 13
  31. 10.5
  32. 116
  33. 0.9
  34. 18.5
  35. 0.3
  36. 32
  37. 25
  38. 3
  39. 290
  40. 405

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