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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 660 · 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. 1.5% of 300 =
  2. 2.20% of 70 =
  3. 3.5% of 260 =
  4. 4.5% of 690 =
  5. 5.5% of 670 =
  6. 6.15% of 760 =
  7. 7.10% of 580 =
  8. 8.25% of 500 =
  9. 9.20% of 260 =
  10. 10.10% of 500 =
  11. 11.20% of 640 =
  12. 12.15% of 90 =
  13. 13.25% of 90 =
  14. 14.10% of 400 =
  15. 15.5% of 850 =
  16. 16.10% of 820 =
  17. 17.20% of 110 =
  18. 18.10% of 520 =
  19. 19.10% of 810 =
  20. 20.25% of 510 =
  21. 21.1% of 500 =
  22. 22.25% of 750 =
  23. 23.5% of 580 =
  24. 24.50% of 710 =
  25. 25.50% of 240 =
  26. 26.10% of 880 =
  27. 27.15% of 520 =
  28. 28.50% of 160 =
  29. 29.20% of 60 =
  30. 30.1% of 320 =
  31. 31.25% of 30 =
  32. 32.20% of 740 =
  33. 33.1% of 640 =
  34. 34.1% of 50 =
  35. 35.50% of 330 =
  36. 36.20% of 150 =
  37. 37.50% of 190 =
  38. 38.5% of 20 =
  39. 39.20% of 310 =
  40. 40.5% of 810 =

Answer key

  1. 15
  2. 14
  3. 13
  4. 34.5
  5. 33.5
  6. 114
  7. 58
  8. 125
  9. 52
  10. 50
  11. 128
  12. 13.5
  13. 22.5
  14. 40
  15. 42.5
  16. 82
  17. 22
  18. 52
  19. 81
  20. 127.5
  21. 5
  22. 187.5
  23. 29
  24. 355
  25. 120
  26. 88
  27. 78
  28. 80
  29. 12
  30. 3.2
  31. 7.5
  32. 148
  33. 6.4
  34. 0.5
  35. 165
  36. 30
  37. 95
  38. 1
  39. 62
  40. 40.5

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