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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 872 · 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 170 =
  2. 2.20% of 730 =
  3. 3.50% of 400 =
  4. 4.10% of 310 =
  5. 5.20% of 30 =
  6. 6.5% of 370 =
  7. 7.10% of 710 =
  8. 8.5% of 240 =
  9. 9.20% of 260 =
  10. 10.15% of 890 =
  11. 11.10% of 210 =
  12. 12.1% of 50 =
  13. 13.10% of 90 =
  14. 14.50% of 160 =
  15. 15.25% of 130 =
  16. 16.10% of 240 =
  17. 17.5% of 410 =
  18. 18.1% of 20 =
  19. 19.1% of 870 =
  20. 20.50% of 530 =
  21. 21.25% of 100 =
  22. 22.1% of 200 =
  23. 23.25% of 50 =
  24. 24.5% of 470 =
  25. 25.1% of 260 =
  26. 26.50% of 110 =
  27. 27.1% of 460 =
  28. 28.1% of 160 =
  29. 29.5% of 740 =
  30. 30.10% of 370 =
  31. 31.5% of 630 =
  32. 32.20% of 560 =
  33. 33.5% of 570 =
  34. 34.50% of 270 =
  35. 35.10% of 70 =
  36. 36.15% of 560 =
  37. 37.5% of 680 =
  38. 38.25% of 170 =
  39. 39.20% of 80 =
  40. 40.15% of 20 =

Answer key

  1. 1.7
  2. 146
  3. 200
  4. 31
  5. 6
  6. 18.5
  7. 71
  8. 12
  9. 52
  10. 133.5
  11. 21
  12. 0.5
  13. 9
  14. 80
  15. 32.5
  16. 24
  17. 20.5
  18. 0.2
  19. 8.7
  20. 265
  21. 25
  22. 2
  23. 12.5
  24. 23.5
  25. 2.6
  26. 55
  27. 4.6
  28. 1.6
  29. 37
  30. 37
  31. 31.5
  32. 112
  33. 28.5
  34. 135
  35. 7
  36. 84
  37. 34
  38. 42.5
  39. 16
  40. 3

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