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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 726 · 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. 1.1% of 360 =
  2. 2.50% of 120 =
  3. 3.25% of 850 =
  4. 4.15% of 20 =
  5. 5.20% of 390 =
  6. 6.5% of 70 =
  7. 7.20% of 420 =
  8. 8.5% of 560 =
  9. 9.1% of 50 =
  10. 10.1% of 770 =
  11. 11.20% of 250 =
  12. 12.1% of 560 =
  13. 13.20% of 40 =
  14. 14.5% of 170 =
  15. 15.50% of 440 =
  16. 16.10% of 230 =
  17. 17.1% of 120 =
  18. 18.15% of 60 =
  19. 19.5% of 390 =
  20. 20.5% of 60 =
  21. 21.20% of 560 =
  22. 22.50% of 780 =
  23. 23.5% of 590 =
  24. 24.1% of 800 =
  25. 25.25% of 30 =
  26. 26.1% of 500 =
  27. 27.20% of 690 =
  28. 28.20% of 780 =
  29. 29.5% of 440 =
  30. 30.50% of 580 =
  31. 31.50% of 720 =
  32. 32.10% of 680 =
  33. 33.15% of 170 =
  34. 34.15% of 50 =
  35. 35.10% of 700 =
  36. 36.1% of 890 =
  37. 37.5% of 680 =
  38. 38.15% of 330 =
  39. 39.15% of 220 =
  40. 40.20% of 640 =

Answer key

  1. 3.6
  2. 60
  3. 212.5
  4. 3
  5. 78
  6. 3.5
  7. 84
  8. 28
  9. 0.5
  10. 7.7
  11. 50
  12. 5.6
  13. 8
  14. 8.5
  15. 220
  16. 23
  17. 1.2
  18. 9
  19. 19.5
  20. 3
  21. 112
  22. 390
  23. 29.5
  24. 8
  25. 7.5
  26. 5
  27. 138
  28. 156
  29. 22
  30. 290
  31. 360
  32. 68
  33. 25.5
  34. 7.5
  35. 70
  36. 8.9
  37. 34
  38. 49.5
  39. 33
  40. 128

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