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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 443 · 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. 1.25% of 720 =
  2. 2.10% of 110 =
  3. 3.10% of 460 =
  4. 4.5% of 30 =
  5. 5.10% of 780 =
  6. 6.25% of 530 =
  7. 7.5% of 550 =
  8. 8.1% of 20 =
  9. 9.50% of 660 =
  10. 10.10% of 870 =
  11. 11.50% of 760 =
  12. 12.20% of 20 =
  13. 13.5% of 720 =
  14. 14.5% of 250 =
  15. 15.25% of 110 =
  16. 16.1% of 340 =
  17. 17.25% of 560 =
  18. 18.25% of 350 =
  19. 19.15% of 340 =
  20. 20.1% of 600 =
  21. 21.15% of 590 =
  22. 22.25% of 50 =
  23. 23.1% of 610 =
  24. 24.5% of 100 =
  25. 25.20% of 430 =
  26. 26.15% of 850 =
  27. 27.50% of 750 =
  28. 28.25% of 640 =
  29. 29.10% of 250 =
  30. 30.50% of 640 =
  31. 31.5% of 390 =
  32. 32.1% of 570 =
  33. 33.1% of 600 =
  34. 34.10% of 40 =
  35. 35.25% of 490 =
  36. 36.25% of 590 =
  37. 37.20% of 390 =
  38. 38.25% of 810 =
  39. 39.25% of 660 =
  40. 40.25% of 90 =

Answer key

  1. 180
  2. 11
  3. 46
  4. 1.5
  5. 78
  6. 132.5
  7. 27.5
  8. 0.2
  9. 330
  10. 87
  11. 380
  12. 4
  13. 36
  14. 12.5
  15. 27.5
  16. 3.4
  17. 140
  18. 87.5
  19. 51
  20. 6
  21. 88.5
  22. 12.5
  23. 6.1
  24. 5
  25. 86
  26. 127.5
  27. 375
  28. 160
  29. 25
  30. 320
  31. 19.5
  32. 5.7
  33. 6
  34. 4
  35. 122.5
  36. 147.5
  37. 78
  38. 202.5
  39. 165
  40. 22.5

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