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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 668 · 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 860 =
  2. 2.20% of 110 =
  3. 3.25% of 280 =
  4. 4.10% of 880 =
  5. 5.20% of 470 =
  6. 6.1% of 170 =
  7. 7.20% of 140 =
  8. 8.1% of 410 =
  9. 9.50% of 890 =
  10. 10.25% of 240 =
  11. 11.1% of 150 =
  12. 12.5% of 330 =
  13. 13.50% of 890 =
  14. 14.5% of 310 =
  15. 15.5% of 270 =
  16. 16.20% of 290 =
  17. 17.1% of 570 =
  18. 18.15% of 140 =
  19. 19.15% of 330 =
  20. 20.5% of 230 =
  21. 21.25% of 480 =
  22. 22.5% of 660 =
  23. 23.20% of 510 =
  24. 24.5% of 460 =
  25. 25.50% of 70 =
  26. 26.25% of 470 =
  27. 27.5% of 430 =
  28. 28.50% of 670 =
  29. 29.50% of 660 =
  30. 30.50% of 370 =
  31. 31.20% of 420 =
  32. 32.10% of 330 =
  33. 33.15% of 440 =
  34. 34.50% of 140 =
  35. 35.15% of 600 =
  36. 36.15% of 190 =
  37. 37.25% of 840 =
  38. 38.15% of 30 =
  39. 39.10% of 520 =
  40. 40.1% of 350 =

Answer key

  1. 43
  2. 22
  3. 70
  4. 88
  5. 94
  6. 1.7
  7. 28
  8. 4.1
  9. 445
  10. 60
  11. 1.5
  12. 16.5
  13. 445
  14. 15.5
  15. 13.5
  16. 58
  17. 5.7
  18. 21
  19. 49.5
  20. 11.5
  21. 120
  22. 33
  23. 102
  24. 23
  25. 35
  26. 117.5
  27. 21.5
  28. 335
  29. 330
  30. 185
  31. 84
  32. 33
  33. 66
  34. 70
  35. 90
  36. 28.5
  37. 210
  38. 4.5
  39. 52
  40. 3.5

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