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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 766 · 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 460 =
  2. 2.10% of 140 =
  3. 3.10% of 190 =
  4. 4.20% of 80 =
  5. 5.25% of 890 =
  6. 6.1% of 430 =
  7. 7.1% of 880 =
  8. 8.1% of 520 =
  9. 9.50% of 830 =
  10. 10.10% of 650 =
  11. 11.15% of 200 =
  12. 12.1% of 40 =
  13. 13.25% of 200 =
  14. 14.50% of 300 =
  15. 15.1% of 890 =
  16. 16.1% of 590 =
  17. 17.50% of 700 =
  18. 18.1% of 60 =
  19. 19.5% of 720 =
  20. 20.10% of 860 =
  21. 21.50% of 280 =
  22. 22.5% of 750 =
  23. 23.5% of 280 =
  24. 24.25% of 340 =
  25. 25.50% of 330 =
  26. 26.10% of 700 =
  27. 27.50% of 620 =
  28. 28.1% of 390 =
  29. 29.1% of 700 =
  30. 30.25% of 360 =
  31. 31.1% of 740 =
  32. 32.50% of 660 =
  33. 33.5% of 20 =
  34. 34.20% of 50 =
  35. 35.20% of 530 =
  36. 36.10% of 420 =
  37. 37.50% of 540 =
  38. 38.1% of 790 =
  39. 39.10% of 220 =
  40. 40.15% of 560 =

Answer key

  1. 230
  2. 14
  3. 19
  4. 16
  5. 222.5
  6. 4.3
  7. 8.8
  8. 5.2
  9. 415
  10. 65
  11. 30
  12. 0.4
  13. 50
  14. 150
  15. 8.9
  16. 5.9
  17. 350
  18. 0.6
  19. 36
  20. 86
  21. 140
  22. 37.5
  23. 14
  24. 85
  25. 165
  26. 70
  27. 310
  28. 3.9
  29. 7
  30. 90
  31. 7.4
  32. 330
  33. 1
  34. 10
  35. 106
  36. 42
  37. 270
  38. 7.9
  39. 22
  40. 84

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