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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 710 · 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 690 =
  2. 2.25% of 610 =
  3. 3.25% of 30 =
  4. 4.50% of 440 =
  5. 5.50% of 840 =
  6. 6.20% of 720 =
  7. 7.15% of 760 =
  8. 8.25% of 490 =
  9. 9.10% of 330 =
  10. 10.20% of 440 =
  11. 11.5% of 660 =
  12. 12.15% of 710 =
  13. 13.10% of 820 =
  14. 14.1% of 350 =
  15. 15.20% of 420 =
  16. 16.50% of 740 =
  17. 17.25% of 420 =
  18. 18.50% of 790 =
  19. 19.10% of 520 =
  20. 20.15% of 830 =
  21. 21.10% of 270 =
  22. 22.10% of 400 =
  23. 23.25% of 190 =
  24. 24.15% of 820 =
  25. 25.5% of 680 =
  26. 26.5% of 210 =
  27. 27.15% of 680 =
  28. 28.5% of 820 =
  29. 29.50% of 500 =
  30. 30.25% of 470 =
  31. 31.10% of 240 =
  32. 32.1% of 30 =
  33. 33.5% of 840 =
  34. 34.25% of 740 =
  35. 35.10% of 840 =
  36. 36.50% of 870 =
  37. 37.1% of 210 =
  38. 38.5% of 790 =
  39. 39.5% of 710 =
  40. 40.1% of 300 =

Answer key

  1. 34.5
  2. 152.5
  3. 7.5
  4. 220
  5. 420
  6. 144
  7. 114
  8. 122.5
  9. 33
  10. 88
  11. 33
  12. 106.5
  13. 82
  14. 3.5
  15. 84
  16. 370
  17. 105
  18. 395
  19. 52
  20. 124.5
  21. 27
  22. 40
  23. 47.5
  24. 123
  25. 34
  26. 10.5
  27. 102
  28. 41
  29. 250
  30. 117.5
  31. 24
  32. 0.3
  33. 42
  34. 185
  35. 84
  36. 435
  37. 2.1
  38. 39.5
  39. 35.5
  40. 3

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