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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 265 · 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 220 =
  2. 2.15% of 360 =
  3. 3.1% of 440 =
  4. 4.15% of 900 =
  5. 5.5% of 480 =
  6. 6.15% of 220 =
  7. 7.25% of 320 =
  8. 8.15% of 710 =
  9. 9.20% of 80 =
  10. 10.10% of 560 =
  11. 11.5% of 530 =
  12. 12.10% of 70 =
  13. 13.25% of 300 =
  14. 14.10% of 220 =
  15. 15.15% of 90 =
  16. 16.20% of 890 =
  17. 17.5% of 740 =
  18. 18.5% of 810 =
  19. 19.1% of 200 =
  20. 20.10% of 600 =
  21. 21.1% of 740 =
  22. 22.10% of 120 =
  23. 23.5% of 300 =
  24. 24.50% of 280 =
  25. 25.25% of 120 =
  26. 26.1% of 200 =
  27. 27.15% of 610 =
  28. 28.20% of 560 =
  29. 29.20% of 80 =
  30. 30.1% of 400 =
  31. 31.25% of 300 =
  32. 32.10% of 500 =
  33. 33.5% of 570 =
  34. 34.15% of 690 =
  35. 35.5% of 150 =
  36. 36.50% of 500 =
  37. 37.50% of 570 =
  38. 38.1% of 220 =
  39. 39.50% of 350 =
  40. 40.25% of 810 =

Answer key

  1. 11
  2. 54
  3. 4.4
  4. 135
  5. 24
  6. 33
  7. 80
  8. 106.5
  9. 16
  10. 56
  11. 26.5
  12. 7
  13. 75
  14. 22
  15. 13.5
  16. 178
  17. 37
  18. 40.5
  19. 2
  20. 60
  21. 7.4
  22. 12
  23. 15
  24. 140
  25. 30
  26. 2
  27. 91.5
  28. 112
  29. 16
  30. 4
  31. 75
  32. 50
  33. 28.5
  34. 103.5
  35. 7.5
  36. 250
  37. 285
  38. 2.2
  39. 175
  40. 202.5

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