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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 915 · 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 100 =
  2. 2.15% of 370 =
  3. 3.20% of 770 =
  4. 4.10% of 250 =
  5. 5.10% of 130 =
  6. 6.5% of 560 =
  7. 7.50% of 100 =
  8. 8.50% of 350 =
  9. 9.10% of 710 =
  10. 10.10% of 650 =
  11. 11.10% of 290 =
  12. 12.10% of 460 =
  13. 13.15% of 490 =
  14. 14.5% of 670 =
  15. 15.1% of 460 =
  16. 16.50% of 250 =
  17. 17.5% of 700 =
  18. 18.20% of 290 =
  19. 19.50% of 650 =
  20. 20.25% of 870 =
  21. 21.10% of 130 =
  22. 22.1% of 430 =
  23. 23.1% of 20 =
  24. 24.5% of 580 =
  25. 25.50% of 620 =
  26. 26.5% of 90 =
  27. 27.50% of 840 =
  28. 28.25% of 860 =
  29. 29.1% of 810 =
  30. 30.20% of 350 =
  31. 31.25% of 900 =
  32. 32.50% of 370 =
  33. 33.15% of 300 =
  34. 34.1% of 80 =
  35. 35.20% of 20 =
  36. 36.50% of 220 =
  37. 37.15% of 300 =
  38. 38.25% of 170 =
  39. 39.5% of 270 =
  40. 40.1% of 760 =

Answer key

  1. 50
  2. 55.5
  3. 154
  4. 25
  5. 13
  6. 28
  7. 50
  8. 175
  9. 71
  10. 65
  11. 29
  12. 46
  13. 73.5
  14. 33.5
  15. 4.6
  16. 125
  17. 35
  18. 58
  19. 325
  20. 217.5
  21. 13
  22. 4.3
  23. 0.2
  24. 29
  25. 310
  26. 4.5
  27. 420
  28. 215
  29. 8.1
  30. 70
  31. 225
  32. 185
  33. 45
  34. 0.8
  35. 4
  36. 110
  37. 45
  38. 42.5
  39. 13.5
  40. 7.6

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