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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 764 · 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. 1.1% of 520 =
  2. 2.15% of 510 =
  3. 3.15% of 890 =
  4. 4.25% of 600 =
  5. 5.10% of 460 =
  6. 6.5% of 330 =
  7. 7.5% of 120 =
  8. 8.50% of 620 =
  9. 9.5% of 20 =
  10. 10.50% of 180 =
  11. 11.25% of 200 =
  12. 12.10% of 380 =
  13. 13.10% of 890 =
  14. 14.5% of 450 =
  15. 15.5% of 710 =
  16. 16.10% of 590 =
  17. 17.5% of 840 =
  18. 18.20% of 440 =
  19. 19.10% of 380 =
  20. 20.25% of 250 =
  21. 21.50% of 530 =
  22. 22.1% of 500 =
  23. 23.50% of 810 =
  24. 24.50% of 460 =
  25. 25.5% of 280 =
  26. 26.20% of 420 =
  27. 27.25% of 690 =
  28. 28.15% of 890 =
  29. 29.50% of 330 =
  30. 30.50% of 70 =
  31. 31.1% of 130 =
  32. 32.5% of 120 =
  33. 33.20% of 690 =
  34. 34.20% of 780 =
  35. 35.20% of 400 =
  36. 36.50% of 530 =
  37. 37.20% of 40 =
  38. 38.1% of 230 =
  39. 39.1% of 520 =
  40. 40.10% of 610 =

Answer key

  1. 5.2
  2. 76.5
  3. 133.5
  4. 150
  5. 46
  6. 16.5
  7. 6
  8. 310
  9. 1
  10. 90
  11. 50
  12. 38
  13. 89
  14. 22.5
  15. 35.5
  16. 59
  17. 42
  18. 88
  19. 38
  20. 62.5
  21. 265
  22. 5
  23. 405
  24. 230
  25. 14
  26. 84
  27. 172.5
  28. 133.5
  29. 165
  30. 35
  31. 1.3
  32. 6
  33. 138
  34. 156
  35. 80
  36. 265
  37. 8
  38. 2.3
  39. 5.2
  40. 61

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