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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 999 · 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 160 =
  2. 2.25% of 620 =
  3. 3.5% of 260 =
  4. 4.1% of 750 =
  5. 5.10% of 350 =
  6. 6.50% of 140 =
  7. 7.25% of 120 =
  8. 8.25% of 730 =
  9. 9.20% of 700 =
  10. 10.10% of 140 =
  11. 11.5% of 780 =
  12. 12.5% of 150 =
  13. 13.50% of 90 =
  14. 14.20% of 380 =
  15. 15.50% of 710 =
  16. 16.25% of 120 =
  17. 17.50% of 360 =
  18. 18.50% of 570 =
  19. 19.20% of 740 =
  20. 20.50% of 330 =
  21. 21.1% of 80 =
  22. 22.20% of 680 =
  23. 23.10% of 180 =
  24. 24.1% of 710 =
  25. 25.25% of 390 =
  26. 26.25% of 800 =
  27. 27.20% of 410 =
  28. 28.25% of 270 =
  29. 29.5% of 210 =
  30. 30.25% of 780 =
  31. 31.25% of 230 =
  32. 32.15% of 200 =
  33. 33.1% of 150 =
  34. 34.25% of 70 =
  35. 35.10% of 60 =
  36. 36.15% of 680 =
  37. 37.20% of 390 =
  38. 38.15% of 480 =
  39. 39.1% of 360 =
  40. 40.15% of 640 =

Answer key

  1. 8
  2. 155
  3. 13
  4. 7.5
  5. 35
  6. 70
  7. 30
  8. 182.5
  9. 140
  10. 14
  11. 39
  12. 7.5
  13. 45
  14. 76
  15. 355
  16. 30
  17. 180
  18. 285
  19. 148
  20. 165
  21. 0.8
  22. 136
  23. 18
  24. 7.1
  25. 97.5
  26. 200
  27. 82
  28. 67.5
  29. 10.5
  30. 195
  31. 57.5
  32. 30
  33. 1.5
  34. 17.5
  35. 6
  36. 102
  37. 78
  38. 72
  39. 3.6
  40. 96

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