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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 961 · 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 110 =
  2. 2.1% of 460 =
  3. 3.50% of 480 =
  4. 4.5% of 760 =
  5. 5.1% of 150 =
  6. 6.5% of 200 =
  7. 7.25% of 390 =
  8. 8.25% of 760 =
  9. 9.20% of 780 =
  10. 10.5% of 340 =
  11. 11.20% of 170 =
  12. 12.50% of 290 =
  13. 13.10% of 370 =
  14. 14.5% of 260 =
  15. 15.25% of 180 =
  16. 16.1% of 520 =
  17. 17.10% of 140 =
  18. 18.20% of 830 =
  19. 19.25% of 540 =
  20. 20.50% of 680 =
  21. 21.15% of 50 =
  22. 22.15% of 790 =
  23. 23.15% of 480 =
  24. 24.10% of 390 =
  25. 25.5% of 380 =
  26. 26.25% of 310 =
  27. 27.15% of 490 =
  28. 28.5% of 360 =
  29. 29.1% of 820 =
  30. 30.1% of 120 =
  31. 31.1% of 90 =
  32. 32.20% of 80 =
  33. 33.15% of 540 =
  34. 34.50% of 720 =
  35. 35.10% of 560 =
  36. 36.25% of 260 =
  37. 37.15% of 620 =
  38. 38.5% of 120 =
  39. 39.50% of 540 =
  40. 40.10% of 640 =

Answer key

  1. 1.1
  2. 4.6
  3. 240
  4. 38
  5. 1.5
  6. 10
  7. 97.5
  8. 190
  9. 156
  10. 17
  11. 34
  12. 145
  13. 37
  14. 13
  15. 45
  16. 5.2
  17. 14
  18. 166
  19. 135
  20. 340
  21. 7.5
  22. 118.5
  23. 72
  24. 39
  25. 19
  26. 77.5
  27. 73.5
  28. 18
  29. 8.2
  30. 1.2
  31. 0.9
  32. 16
  33. 81
  34. 360
  35. 56
  36. 65
  37. 93
  38. 6
  39. 270
  40. 64

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