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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 865 · 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 710 =
  2. 2.15% of 770 =
  3. 3.25% of 130 =
  4. 4.25% of 700 =
  5. 5.25% of 120 =
  6. 6.20% of 490 =
  7. 7.5% of 230 =
  8. 8.5% of 600 =
  9. 9.25% of 110 =
  10. 10.5% of 650 =
  11. 11.5% of 740 =
  12. 12.20% of 750 =
  13. 13.20% of 410 =
  14. 14.25% of 790 =
  15. 15.1% of 50 =
  16. 16.1% of 710 =
  17. 17.50% of 60 =
  18. 18.5% of 260 =
  19. 19.20% of 820 =
  20. 20.10% of 820 =
  21. 21.20% of 170 =
  22. 22.20% of 640 =
  23. 23.5% of 870 =
  24. 24.50% of 830 =
  25. 25.25% of 80 =
  26. 26.50% of 20 =
  27. 27.1% of 260 =
  28. 28.25% of 190 =
  29. 29.5% of 530 =
  30. 30.20% of 600 =
  31. 31.50% of 90 =
  32. 32.50% of 70 =
  33. 33.10% of 210 =
  34. 34.25% of 310 =
  35. 35.50% of 100 =
  36. 36.25% of 120 =
  37. 37.10% of 570 =
  38. 38.1% of 40 =
  39. 39.25% of 520 =
  40. 40.50% of 380 =

Answer key

  1. 7.1
  2. 115.5
  3. 32.5
  4. 175
  5. 30
  6. 98
  7. 11.5
  8. 30
  9. 27.5
  10. 32.5
  11. 37
  12. 150
  13. 82
  14. 197.5
  15. 0.5
  16. 7.1
  17. 30
  18. 13
  19. 164
  20. 82
  21. 34
  22. 128
  23. 43.5
  24. 415
  25. 20
  26. 10
  27. 2.6
  28. 47.5
  29. 26.5
  30. 120
  31. 45
  32. 35
  33. 21
  34. 77.5
  35. 50
  36. 30
  37. 57
  38. 0.4
  39. 130
  40. 190

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