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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 45 · 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. 1.10% of 730 =
  2. 2.20% of 150 =
  3. 3.15% of 830 =
  4. 4.15% of 640 =
  5. 5.20% of 790 =
  6. 6.25% of 340 =
  7. 7.25% of 60 =
  8. 8.5% of 800 =
  9. 9.15% of 710 =
  10. 10.10% of 570 =
  11. 11.15% of 470 =
  12. 12.20% of 710 =
  13. 13.10% of 730 =
  14. 14.20% of 400 =
  15. 15.25% of 510 =
  16. 16.1% of 270 =
  17. 17.1% of 50 =
  18. 18.5% of 410 =
  19. 19.10% of 720 =
  20. 20.15% of 320 =
  21. 21.1% of 330 =
  22. 22.25% of 730 =
  23. 23.50% of 590 =
  24. 24.5% of 620 =
  25. 25.1% of 620 =
  26. 26.25% of 680 =
  27. 27.15% of 270 =
  28. 28.5% of 630 =
  29. 29.5% of 750 =
  30. 30.10% of 160 =
  31. 31.20% of 330 =
  32. 32.10% of 120 =
  33. 33.5% of 470 =
  34. 34.25% of 380 =
  35. 35.20% of 540 =
  36. 36.10% of 370 =
  37. 37.10% of 560 =
  38. 38.25% of 180 =
  39. 39.10% of 820 =
  40. 40.15% of 750 =

Answer key

  1. 73
  2. 30
  3. 124.5
  4. 96
  5. 158
  6. 85
  7. 15
  8. 40
  9. 106.5
  10. 57
  11. 70.5
  12. 142
  13. 73
  14. 80
  15. 127.5
  16. 2.7
  17. 0.5
  18. 20.5
  19. 72
  20. 48
  21. 3.3
  22. 182.5
  23. 295
  24. 31
  25. 6.2
  26. 170
  27. 40.5
  28. 31.5
  29. 37.5
  30. 16
  31. 66
  32. 12
  33. 23.5
  34. 95
  35. 108
  36. 37
  37. 56
  38. 45
  39. 82
  40. 112.5

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