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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 90 · 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. 1.5% of 200 =
  2. 2.25% of 640 =
  3. 3.20% of 710 =
  4. 4.25% of 670 =
  5. 5.20% of 790 =
  6. 6.15% of 580 =
  7. 7.20% of 150 =
  8. 8.10% of 70 =
  9. 9.20% of 180 =
  10. 10.10% of 720 =
  11. 11.20% of 650 =
  12. 12.15% of 250 =
  13. 13.25% of 440 =
  14. 14.10% of 470 =
  15. 15.1% of 360 =
  16. 16.20% of 590 =
  17. 17.10% of 240 =
  18. 18.20% of 100 =
  19. 19.20% of 30 =
  20. 20.20% of 170 =
  21. 21.10% of 100 =
  22. 22.10% of 160 =
  23. 23.1% of 240 =
  24. 24.15% of 670 =
  25. 25.15% of 80 =
  26. 26.10% of 240 =
  27. 27.50% of 880 =
  28. 28.25% of 110 =
  29. 29.15% of 140 =
  30. 30.10% of 230 =
  31. 31.25% of 490 =
  32. 32.1% of 830 =
  33. 33.15% of 330 =
  34. 34.10% of 330 =
  35. 35.10% of 300 =
  36. 36.1% of 250 =
  37. 37.1% of 120 =
  38. 38.10% of 300 =
  39. 39.10% of 40 =
  40. 40.10% of 330 =

Answer key

  1. 10
  2. 160
  3. 142
  4. 167.5
  5. 158
  6. 87
  7. 30
  8. 7
  9. 36
  10. 72
  11. 130
  12. 37.5
  13. 110
  14. 47
  15. 3.6
  16. 118
  17. 24
  18. 20
  19. 6
  20. 34
  21. 10
  22. 16
  23. 2.4
  24. 100.5
  25. 12
  26. 24
  27. 440
  28. 27.5
  29. 21
  30. 23
  31. 122.5
  32. 8.3
  33. 49.5
  34. 33
  35. 30
  36. 2.5
  37. 1.2
  38. 30
  39. 4
  40. 33

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