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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 276 · 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 630 =
  2. 2.50% of 760 =
  3. 3.1% of 900 =
  4. 4.1% of 750 =
  5. 5.5% of 820 =
  6. 6.50% of 220 =
  7. 7.50% of 310 =
  8. 8.20% of 50 =
  9. 9.1% of 210 =
  10. 10.20% of 450 =
  11. 11.20% of 410 =
  12. 12.25% of 310 =
  13. 13.25% of 150 =
  14. 14.5% of 60 =
  15. 15.1% of 430 =
  16. 16.25% of 890 =
  17. 17.15% of 210 =
  18. 18.25% of 260 =
  19. 19.50% of 370 =
  20. 20.10% of 20 =
  21. 21.25% of 570 =
  22. 22.25% of 180 =
  23. 23.10% of 460 =
  24. 24.10% of 70 =
  25. 25.10% of 310 =
  26. 26.5% of 450 =
  27. 27.5% of 760 =
  28. 28.5% of 880 =
  29. 29.15% of 820 =
  30. 30.1% of 90 =
  31. 31.50% of 830 =
  32. 32.25% of 400 =
  33. 33.5% of 160 =
  34. 34.5% of 180 =
  35. 35.10% of 530 =
  36. 36.10% of 520 =
  37. 37.15% of 40 =
  38. 38.20% of 250 =
  39. 39.5% of 150 =
  40. 40.25% of 250 =

Answer key

  1. 315
  2. 380
  3. 9
  4. 7.5
  5. 41
  6. 110
  7. 155
  8. 10
  9. 2.1
  10. 90
  11. 82
  12. 77.5
  13. 37.5
  14. 3
  15. 4.3
  16. 222.5
  17. 31.5
  18. 65
  19. 185
  20. 2
  21. 142.5
  22. 45
  23. 46
  24. 7
  25. 31
  26. 22.5
  27. 38
  28. 44
  29. 123
  30. 0.9
  31. 415
  32. 100
  33. 8
  34. 9
  35. 53
  36. 52
  37. 6
  38. 50
  39. 7.5
  40. 62.5

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