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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 731 · 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 670 =
  2. 2.15% of 250 =
  3. 3.1% of 260 =
  4. 4.50% of 800 =
  5. 5.50% of 300 =
  6. 6.15% of 560 =
  7. 7.1% of 810 =
  8. 8.1% of 360 =
  9. 9.15% of 460 =
  10. 10.15% of 430 =
  11. 11.10% of 770 =
  12. 12.50% of 200 =
  13. 13.20% of 180 =
  14. 14.25% of 630 =
  15. 15.50% of 490 =
  16. 16.5% of 470 =
  17. 17.25% of 390 =
  18. 18.25% of 40 =
  19. 19.5% of 220 =
  20. 20.50% of 460 =
  21. 21.1% of 660 =
  22. 22.10% of 170 =
  23. 23.15% of 560 =
  24. 24.50% of 360 =
  25. 25.5% of 100 =
  26. 26.5% of 160 =
  27. 27.20% of 550 =
  28. 28.25% of 790 =
  29. 29.15% of 40 =
  30. 30.15% of 280 =
  31. 31.10% of 180 =
  32. 32.5% of 570 =
  33. 33.25% of 200 =
  34. 34.1% of 110 =
  35. 35.25% of 320 =
  36. 36.20% of 560 =
  37. 37.50% of 900 =
  38. 38.5% of 900 =
  39. 39.10% of 130 =
  40. 40.1% of 840 =

Answer key

  1. 335
  2. 37.5
  3. 2.6
  4. 400
  5. 150
  6. 84
  7. 8.1
  8. 3.6
  9. 69
  10. 64.5
  11. 77
  12. 100
  13. 36
  14. 157.5
  15. 245
  16. 23.5
  17. 97.5
  18. 10
  19. 11
  20. 230
  21. 6.6
  22. 17
  23. 84
  24. 180
  25. 5
  26. 8
  27. 110
  28. 197.5
  29. 6
  30. 42
  31. 18
  32. 28.5
  33. 50
  34. 1.1
  35. 80
  36. 112
  37. 450
  38. 45
  39. 13
  40. 8.4

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