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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 176 · 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 890 =
  2. 2.5% of 450 =
  3. 3.20% of 730 =
  4. 4.10% of 590 =
  5. 5.20% of 50 =
  6. 6.15% of 620 =
  7. 7.15% of 640 =
  8. 8.20% of 460 =
  9. 9.1% of 80 =
  10. 10.15% of 560 =
  11. 11.5% of 730 =
  12. 12.25% of 310 =
  13. 13.20% of 830 =
  14. 14.5% of 600 =
  15. 15.1% of 180 =
  16. 16.10% of 410 =
  17. 17.25% of 740 =
  18. 18.5% of 480 =
  19. 19.10% of 250 =
  20. 20.25% of 90 =
  21. 21.20% of 900 =
  22. 22.50% of 540 =
  23. 23.25% of 660 =
  24. 24.25% of 130 =
  25. 25.10% of 740 =
  26. 26.25% of 130 =
  27. 27.25% of 890 =
  28. 28.50% of 340 =
  29. 29.25% of 530 =
  30. 30.25% of 730 =
  31. 31.5% of 150 =
  32. 32.50% of 110 =
  33. 33.50% of 490 =
  34. 34.1% of 350 =
  35. 35.1% of 500 =
  36. 36.1% of 490 =
  37. 37.50% of 830 =
  38. 38.10% of 30 =
  39. 39.5% of 690 =
  40. 40.10% of 150 =

Answer key

  1. 222.5
  2. 22.5
  3. 146
  4. 59
  5. 10
  6. 93
  7. 96
  8. 92
  9. 0.8
  10. 84
  11. 36.5
  12. 77.5
  13. 166
  14. 30
  15. 1.8
  16. 41
  17. 185
  18. 24
  19. 25
  20. 22.5
  21. 180
  22. 270
  23. 165
  24. 32.5
  25. 74
  26. 32.5
  27. 222.5
  28. 170
  29. 132.5
  30. 182.5
  31. 7.5
  32. 55
  33. 245
  34. 3.5
  35. 5
  36. 4.9
  37. 415
  38. 3
  39. 34.5
  40. 15

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