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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 143 · 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 320 =
  2. 2.1% of 330 =
  3. 3.10% of 850 =
  4. 4.50% of 330 =
  5. 5.20% of 270 =
  6. 6.50% of 590 =
  7. 7.15% of 590 =
  8. 8.10% of 600 =
  9. 9.50% of 340 =
  10. 10.50% of 70 =
  11. 11.1% of 460 =
  12. 12.20% of 280 =
  13. 13.1% of 20 =
  14. 14.10% of 370 =
  15. 15.5% of 790 =
  16. 16.25% of 530 =
  17. 17.25% of 850 =
  18. 18.5% of 50 =
  19. 19.10% of 410 =
  20. 20.15% of 830 =
  21. 21.15% of 640 =
  22. 22.1% of 800 =
  23. 23.10% of 840 =
  24. 24.25% of 450 =
  25. 25.5% of 250 =
  26. 26.5% of 210 =
  27. 27.20% of 30 =
  28. 28.1% of 130 =
  29. 29.20% of 390 =
  30. 30.20% of 810 =
  31. 31.5% of 550 =
  32. 32.50% of 240 =
  33. 33.50% of 620 =
  34. 34.1% of 440 =
  35. 35.20% of 650 =
  36. 36.10% of 40 =
  37. 37.1% of 490 =
  38. 38.10% of 300 =
  39. 39.15% of 460 =
  40. 40.10% of 360 =

Answer key

  1. 80
  2. 3.3
  3. 85
  4. 165
  5. 54
  6. 295
  7. 88.5
  8. 60
  9. 170
  10. 35
  11. 4.6
  12. 56
  13. 0.2
  14. 37
  15. 39.5
  16. 132.5
  17. 212.5
  18. 2.5
  19. 41
  20. 124.5
  21. 96
  22. 8
  23. 84
  24. 112.5
  25. 12.5
  26. 10.5
  27. 6
  28. 1.3
  29. 78
  30. 162
  31. 27.5
  32. 120
  33. 310
  34. 4.4
  35. 130
  36. 4
  37. 4.9
  38. 30
  39. 69
  40. 36

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