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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 539 · 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 530 =
  2. 2.25% of 20 =
  3. 3.15% of 110 =
  4. 4.25% of 60 =
  5. 5.20% of 900 =
  6. 6.10% of 80 =
  7. 7.50% of 60 =
  8. 8.5% of 60 =
  9. 9.50% of 790 =
  10. 10.1% of 220 =
  11. 11.50% of 400 =
  12. 12.5% of 330 =
  13. 13.25% of 550 =
  14. 14.1% of 690 =
  15. 15.10% of 700 =
  16. 16.5% of 50 =
  17. 17.20% of 560 =
  18. 18.5% of 100 =
  19. 19.10% of 830 =
  20. 20.20% of 180 =
  21. 21.5% of 190 =
  22. 22.1% of 570 =
  23. 23.5% of 70 =
  24. 24.25% of 590 =
  25. 25.50% of 200 =
  26. 26.10% of 590 =
  27. 27.50% of 710 =
  28. 28.1% of 330 =
  29. 29.50% of 510 =
  30. 30.20% of 770 =
  31. 31.20% of 670 =
  32. 32.1% of 730 =
  33. 33.50% of 540 =
  34. 34.5% of 220 =
  35. 35.10% of 240 =
  36. 36.10% of 310 =
  37. 37.5% of 220 =
  38. 38.20% of 330 =
  39. 39.25% of 890 =
  40. 40.20% of 670 =

Answer key

  1. 53
  2. 5
  3. 16.5
  4. 15
  5. 180
  6. 8
  7. 30
  8. 3
  9. 395
  10. 2.2
  11. 200
  12. 16.5
  13. 137.5
  14. 6.9
  15. 70
  16. 2.5
  17. 112
  18. 5
  19. 83
  20. 36
  21. 9.5
  22. 5.7
  23. 3.5
  24. 147.5
  25. 100
  26. 59
  27. 355
  28. 3.3
  29. 255
  30. 154
  31. 134
  32. 7.3
  33. 270
  34. 11
  35. 24
  36. 31
  37. 11
  38. 66
  39. 222.5
  40. 134

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