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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 199 · 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. 1.15% of 880 =
  2. 2.50% of 50 =
  3. 3.5% of 200 =
  4. 4.50% of 800 =
  5. 5.25% of 470 =
  6. 6.15% of 900 =
  7. 7.25% of 440 =
  8. 8.10% of 730 =
  9. 9.5% of 90 =
  10. 10.25% of 560 =
  11. 11.25% of 290 =
  12. 12.10% of 170 =
  13. 13.1% of 280 =
  14. 14.25% of 740 =
  15. 15.5% of 600 =
  16. 16.1% of 830 =
  17. 17.20% of 820 =
  18. 18.1% of 350 =
  19. 19.20% of 150 =
  20. 20.1% of 110 =
  21. 21.5% of 340 =
  22. 22.1% of 440 =
  23. 23.50% of 830 =
  24. 24.15% of 660 =
  25. 25.5% of 200 =
  26. 26.1% of 260 =
  27. 27.20% of 240 =
  28. 28.15% of 750 =
  29. 29.10% of 530 =
  30. 30.25% of 520 =
  31. 31.15% of 420 =
  32. 32.5% of 650 =
  33. 33.25% of 160 =
  34. 34.20% of 90 =
  35. 35.10% of 890 =
  36. 36.15% of 500 =
  37. 37.50% of 300 =
  38. 38.25% of 290 =
  39. 39.15% of 650 =
  40. 40.20% of 320 =

Answer key

  1. 132
  2. 25
  3. 10
  4. 400
  5. 117.5
  6. 135
  7. 110
  8. 73
  9. 4.5
  10. 140
  11. 72.5
  12. 17
  13. 2.8
  14. 185
  15. 30
  16. 8.3
  17. 164
  18. 3.5
  19. 30
  20. 1.1
  21. 17
  22. 4.4
  23. 415
  24. 99
  25. 10
  26. 2.6
  27. 48
  28. 112.5
  29. 53
  30. 130
  31. 63
  32. 32.5
  33. 40
  34. 18
  35. 89
  36. 75
  37. 150
  38. 72.5
  39. 97.5
  40. 64

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