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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 871 · 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. 1.20% of 290 =
  2. 2.50% of 150 =
  3. 3.25% of 540 =
  4. 4.10% of 300 =
  5. 5.15% of 460 =
  6. 6.10% of 840 =
  7. 7.10% of 600 =
  8. 8.25% of 370 =
  9. 9.50% of 330 =
  10. 10.20% of 30 =
  11. 11.25% of 480 =
  12. 12.25% of 260 =
  13. 13.20% of 580 =
  14. 14.20% of 730 =
  15. 15.20% of 440 =
  16. 16.25% of 730 =
  17. 17.15% of 870 =
  18. 18.10% of 70 =
  19. 19.20% of 460 =
  20. 20.25% of 490 =
  21. 21.50% of 880 =
  22. 22.5% of 100 =
  23. 23.5% of 270 =
  24. 24.20% of 100 =
  25. 25.5% of 730 =
  26. 26.5% of 90 =
  27. 27.20% of 550 =
  28. 28.25% of 150 =
  29. 29.20% of 810 =
  30. 30.10% of 190 =
  31. 31.20% of 740 =
  32. 32.50% of 410 =
  33. 33.5% of 130 =
  34. 34.15% of 90 =
  35. 35.5% of 510 =
  36. 36.50% of 620 =
  37. 37.15% of 510 =
  38. 38.25% of 510 =
  39. 39.5% of 770 =
  40. 40.20% of 220 =

Answer key

  1. 58
  2. 75
  3. 135
  4. 30
  5. 69
  6. 84
  7. 60
  8. 92.5
  9. 165
  10. 6
  11. 120
  12. 65
  13. 116
  14. 146
  15. 88
  16. 182.5
  17. 130.5
  18. 7
  19. 92
  20. 122.5
  21. 440
  22. 5
  23. 13.5
  24. 20
  25. 36.5
  26. 4.5
  27. 110
  28. 37.5
  29. 162
  30. 19
  31. 148
  32. 205
  33. 6.5
  34. 13.5
  35. 25.5
  36. 310
  37. 76.5
  38. 127.5
  39. 38.5
  40. 44

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