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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 571 · 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 60 =
  2. 2.1% of 480 =
  3. 3.10% of 230 =
  4. 4.10% of 170 =
  5. 5.1% of 310 =
  6. 6.20% of 860 =
  7. 7.1% of 690 =
  8. 8.1% of 570 =
  9. 9.10% of 830 =
  10. 10.15% of 50 =
  11. 11.5% of 60 =
  12. 12.10% of 830 =
  13. 13.50% of 70 =
  14. 14.5% of 80 =
  15. 15.50% of 660 =
  16. 16.20% of 460 =
  17. 17.50% of 110 =
  18. 18.10% of 600 =
  19. 19.15% of 810 =
  20. 20.10% of 650 =
  21. 21.50% of 370 =
  22. 22.10% of 180 =
  23. 23.5% of 200 =
  24. 24.5% of 120 =
  25. 25.15% of 190 =
  26. 26.5% of 250 =
  27. 27.15% of 700 =
  28. 28.1% of 40 =
  29. 29.20% of 670 =
  30. 30.10% of 690 =
  31. 31.10% of 720 =
  32. 32.50% of 150 =
  33. 33.5% of 250 =
  34. 34.15% of 730 =
  35. 35.5% of 440 =
  36. 36.15% of 830 =
  37. 37.20% of 410 =
  38. 38.5% of 130 =
  39. 39.5% of 850 =
  40. 40.50% of 320 =

Answer key

  1. 3
  2. 4.8
  3. 23
  4. 17
  5. 3.1
  6. 172
  7. 6.9
  8. 5.7
  9. 83
  10. 7.5
  11. 3
  12. 83
  13. 35
  14. 4
  15. 330
  16. 92
  17. 55
  18. 60
  19. 121.5
  20. 65
  21. 185
  22. 18
  23. 10
  24. 6
  25. 28.5
  26. 12.5
  27. 105
  28. 0.4
  29. 134
  30. 69
  31. 72
  32. 75
  33. 12.5
  34. 109.5
  35. 22
  36. 124.5
  37. 82
  38. 6.5
  39. 42.5
  40. 160

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