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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 884 · 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. 1.10% of 610 =
  2. 2.1% of 530 =
  3. 3.5% of 890 =
  4. 4.25% of 560 =
  5. 5.15% of 480 =
  6. 6.50% of 520 =
  7. 7.20% of 180 =
  8. 8.25% of 670 =
  9. 9.15% of 260 =
  10. 10.50% of 70 =
  11. 11.5% of 150 =
  12. 12.5% of 200 =
  13. 13.10% of 120 =
  14. 14.1% of 630 =
  15. 15.20% of 530 =
  16. 16.20% of 70 =
  17. 17.15% of 900 =
  18. 18.25% of 800 =
  19. 19.10% of 300 =
  20. 20.10% of 750 =
  21. 21.1% of 200 =
  22. 22.15% of 850 =
  23. 23.25% of 420 =
  24. 24.15% of 120 =
  25. 25.50% of 280 =
  26. 26.50% of 430 =
  27. 27.20% of 90 =
  28. 28.10% of 650 =
  29. 29.10% of 500 =
  30. 30.5% of 220 =
  31. 31.15% of 500 =
  32. 32.15% of 230 =
  33. 33.15% of 250 =
  34. 34.20% of 370 =
  35. 35.20% of 400 =
  36. 36.25% of 240 =
  37. 37.5% of 410 =
  38. 38.50% of 170 =
  39. 39.25% of 590 =
  40. 40.25% of 740 =

Answer key

  1. 61
  2. 5.3
  3. 44.5
  4. 140
  5. 72
  6. 260
  7. 36
  8. 167.5
  9. 39
  10. 35
  11. 7.5
  12. 10
  13. 12
  14. 6.3
  15. 106
  16. 14
  17. 135
  18. 200
  19. 30
  20. 75
  21. 2
  22. 127.5
  23. 105
  24. 18
  25. 140
  26. 215
  27. 18
  28. 65
  29. 50
  30. 11
  31. 75
  32. 34.5
  33. 37.5
  34. 74
  35. 80
  36. 60
  37. 20.5
  38. 85
  39. 147.5
  40. 185

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