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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 296 · 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. 1.50% of 400 =
  2. 2.15% of 760 =
  3. 3.20% of 120 =
  4. 4.10% of 250 =
  5. 5.25% of 20 =
  6. 6.1% of 50 =
  7. 7.50% of 130 =
  8. 8.20% of 300 =
  9. 9.5% of 380 =
  10. 10.1% of 610 =
  11. 11.25% of 670 =
  12. 12.25% of 600 =
  13. 13.15% of 750 =
  14. 14.10% of 430 =
  15. 15.5% of 50 =
  16. 16.20% of 110 =
  17. 17.1% of 330 =
  18. 18.15% of 640 =
  19. 19.50% of 310 =
  20. 20.20% of 140 =
  21. 21.10% of 240 =
  22. 22.20% of 170 =
  23. 23.10% of 70 =
  24. 24.10% of 150 =
  25. 25.15% of 590 =
  26. 26.5% of 740 =
  27. 27.15% of 760 =
  28. 28.20% of 630 =
  29. 29.10% of 790 =
  30. 30.5% of 130 =
  31. 31.25% of 450 =
  32. 32.20% of 100 =
  33. 33.15% of 560 =
  34. 34.10% of 380 =
  35. 35.50% of 400 =
  36. 36.10% of 890 =
  37. 37.50% of 440 =
  38. 38.1% of 350 =
  39. 39.15% of 850 =
  40. 40.15% of 60 =

Answer key

  1. 200
  2. 114
  3. 24
  4. 25
  5. 5
  6. 0.5
  7. 65
  8. 60
  9. 19
  10. 6.1
  11. 167.5
  12. 150
  13. 112.5
  14. 43
  15. 2.5
  16. 22
  17. 3.3
  18. 96
  19. 155
  20. 28
  21. 24
  22. 34
  23. 7
  24. 15
  25. 88.5
  26. 37
  27. 114
  28. 126
  29. 79
  30. 6.5
  31. 112.5
  32. 20
  33. 84
  34. 38
  35. 200
  36. 89
  37. 220
  38. 3.5
  39. 127.5
  40. 9

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