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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 824 · 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. 1.20% of 570 =
  2. 2.25% of 150 =
  3. 3.5% of 290 =
  4. 4.1% of 260 =
  5. 5.5% of 830 =
  6. 6.10% of 850 =
  7. 7.5% of 160 =
  8. 8.15% of 570 =
  9. 9.25% of 280 =
  10. 10.20% of 470 =
  11. 11.25% of 790 =
  12. 12.25% of 530 =
  13. 13.5% of 140 =
  14. 14.15% of 50 =
  15. 15.15% of 890 =
  16. 16.5% of 200 =
  17. 17.1% of 630 =
  18. 18.1% of 850 =
  19. 19.1% of 300 =
  20. 20.15% of 20 =
  21. 21.1% of 710 =
  22. 22.1% of 310 =
  23. 23.10% of 130 =
  24. 24.1% of 130 =
  25. 25.20% of 390 =
  26. 26.10% of 390 =
  27. 27.50% of 520 =
  28. 28.15% of 420 =
  29. 29.50% of 700 =
  30. 30.10% of 570 =
  31. 31.25% of 600 =
  32. 32.20% of 800 =
  33. 33.15% of 170 =
  34. 34.1% of 740 =
  35. 35.15% of 460 =
  36. 36.25% of 810 =
  37. 37.5% of 820 =
  38. 38.10% of 430 =
  39. 39.25% of 120 =
  40. 40.20% of 230 =

Answer key

  1. 114
  2. 37.5
  3. 14.5
  4. 2.6
  5. 41.5
  6. 85
  7. 8
  8. 85.5
  9. 70
  10. 94
  11. 197.5
  12. 132.5
  13. 7
  14. 7.5
  15. 133.5
  16. 10
  17. 6.3
  18. 8.5
  19. 3
  20. 3
  21. 7.1
  22. 3.1
  23. 13
  24. 1.3
  25. 78
  26. 39
  27. 260
  28. 63
  29. 350
  30. 57
  31. 150
  32. 160
  33. 25.5
  34. 7.4
  35. 69
  36. 202.5
  37. 41
  38. 43
  39. 30
  40. 46

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