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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 236 · 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. 1.15% of 730 =
  2. 2.5% of 300 =
  3. 3.15% of 240 =
  4. 4.25% of 180 =
  5. 5.20% of 690 =
  6. 6.20% of 190 =
  7. 7.50% of 330 =
  8. 8.15% of 40 =
  9. 9.5% of 130 =
  10. 10.15% of 40 =
  11. 11.5% of 250 =
  12. 12.50% of 500 =
  13. 13.15% of 830 =
  14. 14.1% of 720 =
  15. 15.20% of 70 =
  16. 16.10% of 60 =
  17. 17.10% of 370 =
  18. 18.5% of 60 =
  19. 19.5% of 190 =
  20. 20.10% of 270 =
  21. 21.1% of 60 =
  22. 22.25% of 340 =
  23. 23.1% of 20 =
  24. 24.1% of 20 =
  25. 25.10% of 470 =
  26. 26.50% of 330 =
  27. 27.5% of 130 =
  28. 28.10% of 720 =
  29. 29.25% of 830 =
  30. 30.1% of 500 =
  31. 31.5% of 160 =
  32. 32.1% of 160 =
  33. 33.20% of 770 =
  34. 34.25% of 760 =
  35. 35.25% of 450 =
  36. 36.10% of 750 =
  37. 37.25% of 450 =
  38. 38.10% of 290 =
  39. 39.25% of 410 =
  40. 40.5% of 870 =

Answer key

  1. 109.5
  2. 15
  3. 36
  4. 45
  5. 138
  6. 38
  7. 165
  8. 6
  9. 6.5
  10. 6
  11. 12.5
  12. 250
  13. 124.5
  14. 7.2
  15. 14
  16. 6
  17. 37
  18. 3
  19. 9.5
  20. 27
  21. 0.6
  22. 85
  23. 0.2
  24. 0.2
  25. 47
  26. 165
  27. 6.5
  28. 72
  29. 207.5
  30. 5
  31. 8
  32. 1.6
  33. 154
  34. 190
  35. 112.5
  36. 75
  37. 112.5
  38. 29
  39. 102.5
  40. 43.5

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