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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 791 · 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 600 =
  2. 2.20% of 480 =
  3. 3.20% of 620 =
  4. 4.50% of 450 =
  5. 5.25% of 20 =
  6. 6.50% of 130 =
  7. 7.25% of 20 =
  8. 8.15% of 410 =
  9. 9.10% of 890 =
  10. 10.5% of 120 =
  11. 11.10% of 730 =
  12. 12.5% of 650 =
  13. 13.5% of 210 =
  14. 14.10% of 160 =
  15. 15.1% of 310 =
  16. 16.20% of 210 =
  17. 17.5% of 600 =
  18. 18.1% of 300 =
  19. 19.10% of 530 =
  20. 20.25% of 550 =
  21. 21.50% of 490 =
  22. 22.50% of 500 =
  23. 23.15% of 230 =
  24. 24.25% of 460 =
  25. 25.10% of 640 =
  26. 26.5% of 650 =
  27. 27.10% of 750 =
  28. 28.25% of 520 =
  29. 29.50% of 330 =
  30. 30.20% of 400 =
  31. 31.10% of 580 =
  32. 32.20% of 370 =
  33. 33.15% of 720 =
  34. 34.5% of 800 =
  35. 35.5% of 110 =
  36. 36.25% of 210 =
  37. 37.20% of 900 =
  38. 38.15% of 740 =
  39. 39.20% of 30 =
  40. 40.5% of 740 =

Answer key

  1. 30
  2. 96
  3. 124
  4. 225
  5. 5
  6. 65
  7. 5
  8. 61.5
  9. 89
  10. 6
  11. 73
  12. 32.5
  13. 10.5
  14. 16
  15. 3.1
  16. 42
  17. 30
  18. 3
  19. 53
  20. 137.5
  21. 245
  22. 250
  23. 34.5
  24. 115
  25. 64
  26. 32.5
  27. 75
  28. 130
  29. 165
  30. 80
  31. 58
  32. 74
  33. 108
  34. 40
  35. 5.5
  36. 52.5
  37. 180
  38. 111
  39. 6
  40. 37

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