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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 945 · 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 480 =
  2. 2.15% of 460 =
  3. 3.15% of 460 =
  4. 4.20% of 50 =
  5. 5.10% of 20 =
  6. 6.1% of 490 =
  7. 7.25% of 40 =
  8. 8.50% of 500 =
  9. 9.50% of 330 =
  10. 10.10% of 130 =
  11. 11.5% of 390 =
  12. 12.15% of 360 =
  13. 13.20% of 130 =
  14. 14.50% of 210 =
  15. 15.25% of 20 =
  16. 16.5% of 240 =
  17. 17.15% of 140 =
  18. 18.20% of 820 =
  19. 19.50% of 230 =
  20. 20.1% of 500 =
  21. 21.15% of 180 =
  22. 22.25% of 680 =
  23. 23.25% of 80 =
  24. 24.20% of 80 =
  25. 25.1% of 800 =
  26. 26.10% of 250 =
  27. 27.20% of 70 =
  28. 28.1% of 210 =
  29. 29.20% of 420 =
  30. 30.50% of 430 =
  31. 31.50% of 460 =
  32. 32.20% of 80 =
  33. 33.1% of 370 =
  34. 34.10% of 30 =
  35. 35.5% of 670 =
  36. 36.25% of 590 =
  37. 37.15% of 630 =
  38. 38.50% of 600 =
  39. 39.25% of 80 =
  40. 40.50% of 260 =

Answer key

  1. 48
  2. 69
  3. 69
  4. 10
  5. 2
  6. 4.9
  7. 10
  8. 250
  9. 165
  10. 13
  11. 19.5
  12. 54
  13. 26
  14. 105
  15. 5
  16. 12
  17. 21
  18. 164
  19. 115
  20. 5
  21. 27
  22. 170
  23. 20
  24. 16
  25. 8
  26. 25
  27. 14
  28. 2.1
  29. 84
  30. 215
  31. 230
  32. 16
  33. 3.7
  34. 3
  35. 33.5
  36. 147.5
  37. 94.5
  38. 300
  39. 20
  40. 130

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