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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 991 · 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 860 =
  2. 2.15% of 550 =
  3. 3.5% of 800 =
  4. 4.20% of 780 =
  5. 5.25% of 470 =
  6. 6.50% of 440 =
  7. 7.15% of 620 =
  8. 8.1% of 900 =
  9. 9.20% of 390 =
  10. 10.10% of 40 =
  11. 11.20% of 220 =
  12. 12.25% of 230 =
  13. 13.20% of 760 =
  14. 14.25% of 760 =
  15. 15.5% of 160 =
  16. 16.20% of 130 =
  17. 17.25% of 290 =
  18. 18.50% of 110 =
  19. 19.5% of 770 =
  20. 20.5% of 50 =
  21. 21.1% of 480 =
  22. 22.15% of 450 =
  23. 23.10% of 500 =
  24. 24.50% of 30 =
  25. 25.25% of 800 =
  26. 26.5% of 760 =
  27. 27.5% of 730 =
  28. 28.20% of 340 =
  29. 29.5% of 190 =
  30. 30.25% of 50 =
  31. 31.50% of 480 =
  32. 32.50% of 580 =
  33. 33.15% of 460 =
  34. 34.20% of 420 =
  35. 35.50% of 420 =
  36. 36.5% of 600 =
  37. 37.25% of 490 =
  38. 38.1% of 420 =
  39. 39.50% of 210 =
  40. 40.25% of 420 =

Answer key

  1. 43
  2. 82.5
  3. 40
  4. 156
  5. 117.5
  6. 220
  7. 93
  8. 9
  9. 78
  10. 4
  11. 44
  12. 57.5
  13. 152
  14. 190
  15. 8
  16. 26
  17. 72.5
  18. 55
  19. 38.5
  20. 2.5
  21. 4.8
  22. 67.5
  23. 50
  24. 15
  25. 200
  26. 38
  27. 36.5
  28. 68
  29. 9.5
  30. 12.5
  31. 240
  32. 290
  33. 69
  34. 84
  35. 210
  36. 30
  37. 122.5
  38. 4.2
  39. 105
  40. 105

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