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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 858 · 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. 1.1% of 800 =
  2. 2.20% of 150 =
  3. 3.10% of 460 =
  4. 4.5% of 620 =
  5. 5.25% of 720 =
  6. 6.5% of 170 =
  7. 7.5% of 520 =
  8. 8.10% of 750 =
  9. 9.25% of 220 =
  10. 10.50% of 530 =
  11. 11.10% of 900 =
  12. 12.10% of 410 =
  13. 13.10% of 510 =
  14. 14.50% of 160 =
  15. 15.25% of 640 =
  16. 16.1% of 240 =
  17. 17.25% of 620 =
  18. 18.25% of 70 =
  19. 19.10% of 380 =
  20. 20.15% of 360 =
  21. 21.25% of 610 =
  22. 22.10% of 120 =
  23. 23.5% of 360 =
  24. 24.20% of 580 =
  25. 25.5% of 810 =
  26. 26.25% of 220 =
  27. 27.25% of 110 =
  28. 28.50% of 570 =
  29. 29.20% of 250 =
  30. 30.25% of 830 =
  31. 31.1% of 170 =
  32. 32.15% of 740 =
  33. 33.20% of 140 =
  34. 34.15% of 700 =
  35. 35.5% of 820 =
  36. 36.5% of 300 =
  37. 37.25% of 750 =
  38. 38.1% of 70 =
  39. 39.10% of 150 =
  40. 40.5% of 240 =

Answer key

  1. 8
  2. 30
  3. 46
  4. 31
  5. 180
  6. 8.5
  7. 26
  8. 75
  9. 55
  10. 265
  11. 90
  12. 41
  13. 51
  14. 80
  15. 160
  16. 2.4
  17. 155
  18. 17.5
  19. 38
  20. 54
  21. 152.5
  22. 12
  23. 18
  24. 116
  25. 40.5
  26. 55
  27. 27.5
  28. 285
  29. 50
  30. 207.5
  31. 1.7
  32. 111
  33. 28
  34. 105
  35. 41
  36. 15
  37. 187.5
  38. 0.7
  39. 15
  40. 12

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