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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 806 · 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 730 =
  2. 2.25% of 440 =
  3. 3.20% of 220 =
  4. 4.5% of 40 =
  5. 5.1% of 670 =
  6. 6.20% of 280 =
  7. 7.10% of 40 =
  8. 8.10% of 410 =
  9. 9.10% of 330 =
  10. 10.20% of 240 =
  11. 11.15% of 710 =
  12. 12.10% of 40 =
  13. 13.5% of 450 =
  14. 14.10% of 820 =
  15. 15.5% of 540 =
  16. 16.1% of 650 =
  17. 17.50% of 60 =
  18. 18.50% of 170 =
  19. 19.25% of 150 =
  20. 20.50% of 900 =
  21. 21.50% of 220 =
  22. 22.20% of 170 =
  23. 23.15% of 20 =
  24. 24.1% of 830 =
  25. 25.5% of 140 =
  26. 26.50% of 90 =
  27. 27.20% of 360 =
  28. 28.5% of 610 =
  29. 29.1% of 320 =
  30. 30.1% of 230 =
  31. 31.10% of 630 =
  32. 32.10% of 280 =
  33. 33.5% of 180 =
  34. 34.20% of 360 =
  35. 35.15% of 370 =
  36. 36.1% of 570 =
  37. 37.25% of 230 =
  38. 38.25% of 120 =
  39. 39.25% of 520 =
  40. 40.1% of 140 =

Answer key

  1. 146
  2. 110
  3. 44
  4. 2
  5. 6.7
  6. 56
  7. 4
  8. 41
  9. 33
  10. 48
  11. 106.5
  12. 4
  13. 22.5
  14. 82
  15. 27
  16. 6.5
  17. 30
  18. 85
  19. 37.5
  20. 450
  21. 110
  22. 34
  23. 3
  24. 8.3
  25. 7
  26. 45
  27. 72
  28. 30.5
  29. 3.2
  30. 2.3
  31. 63
  32. 28
  33. 9
  34. 72
  35. 55.5
  36. 5.7
  37. 57.5
  38. 30
  39. 130
  40. 1.4

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