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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 283 · 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 190 =
  2. 2.1% of 520 =
  3. 3.15% of 850 =
  4. 4.50% of 350 =
  5. 5.10% of 830 =
  6. 6.50% of 460 =
  7. 7.25% of 100 =
  8. 8.50% of 550 =
  9. 9.10% of 540 =
  10. 10.15% of 390 =
  11. 11.20% of 400 =
  12. 12.50% of 410 =
  13. 13.10% of 640 =
  14. 14.1% of 690 =
  15. 15.10% of 720 =
  16. 16.5% of 690 =
  17. 17.10% of 720 =
  18. 18.1% of 370 =
  19. 19.25% of 890 =
  20. 20.20% of 330 =
  21. 21.5% of 690 =
  22. 22.25% of 450 =
  23. 23.15% of 150 =
  24. 24.25% of 720 =
  25. 25.20% of 650 =
  26. 26.1% of 160 =
  27. 27.1% of 580 =
  28. 28.20% of 710 =
  29. 29.20% of 850 =
  30. 30.5% of 290 =
  31. 31.5% of 230 =
  32. 32.20% of 520 =
  33. 33.10% of 650 =
  34. 34.50% of 590 =
  35. 35.50% of 80 =
  36. 36.10% of 300 =
  37. 37.5% of 110 =
  38. 38.5% of 240 =
  39. 39.20% of 440 =
  40. 40.1% of 330 =

Answer key

  1. 95
  2. 5.2
  3. 127.5
  4. 175
  5. 83
  6. 230
  7. 25
  8. 275
  9. 54
  10. 58.5
  11. 80
  12. 205
  13. 64
  14. 6.9
  15. 72
  16. 34.5
  17. 72
  18. 3.7
  19. 222.5
  20. 66
  21. 34.5
  22. 112.5
  23. 22.5
  24. 180
  25. 130
  26. 1.6
  27. 5.8
  28. 142
  29. 170
  30. 14.5
  31. 11.5
  32. 104
  33. 65
  34. 295
  35. 40
  36. 30
  37. 5.5
  38. 12
  39. 88
  40. 3.3

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