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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 159 · 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. 1.15% of 550 =
  2. 2.1% of 480 =
  3. 3.50% of 570 =
  4. 4.5% of 730 =
  5. 5.1% of 830 =
  6. 6.15% of 200 =
  7. 7.50% of 290 =
  8. 8.15% of 740 =
  9. 9.10% of 330 =
  10. 10.50% of 320 =
  11. 11.10% of 560 =
  12. 12.5% of 290 =
  13. 13.15% of 570 =
  14. 14.1% of 100 =
  15. 15.15% of 890 =
  16. 16.50% of 590 =
  17. 17.50% of 200 =
  18. 18.10% of 330 =
  19. 19.20% of 160 =
  20. 20.25% of 850 =
  21. 21.50% of 270 =
  22. 22.10% of 200 =
  23. 23.25% of 750 =
  24. 24.1% of 90 =
  25. 25.1% of 360 =
  26. 26.10% of 640 =
  27. 27.1% of 190 =
  28. 28.5% of 410 =
  29. 29.1% of 430 =
  30. 30.1% of 470 =
  31. 31.15% of 310 =
  32. 32.5% of 810 =
  33. 33.20% of 190 =
  34. 34.5% of 500 =
  35. 35.50% of 860 =
  36. 36.10% of 170 =
  37. 37.50% of 490 =
  38. 38.20% of 430 =
  39. 39.10% of 570 =
  40. 40.10% of 410 =

Answer key

  1. 82.5
  2. 4.8
  3. 285
  4. 36.5
  5. 8.3
  6. 30
  7. 145
  8. 111
  9. 33
  10. 160
  11. 56
  12. 14.5
  13. 85.5
  14. 1
  15. 133.5
  16. 295
  17. 100
  18. 33
  19. 32
  20. 212.5
  21. 135
  22. 20
  23. 187.5
  24. 0.9
  25. 3.6
  26. 64
  27. 1.9
  28. 20.5
  29. 4.3
  30. 4.7
  31. 46.5
  32. 40.5
  33. 38
  34. 25
  35. 430
  36. 17
  37. 245
  38. 86
  39. 57
  40. 41

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