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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 834 · 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 520 =
  2. 2.50% of 460 =
  3. 3.15% of 640 =
  4. 4.10% of 120 =
  5. 5.5% of 290 =
  6. 6.5% of 380 =
  7. 7.20% of 630 =
  8. 8.20% of 650 =
  9. 9.20% of 110 =
  10. 10.1% of 450 =
  11. 11.1% of 680 =
  12. 12.10% of 860 =
  13. 13.5% of 370 =
  14. 14.25% of 470 =
  15. 15.20% of 140 =
  16. 16.20% of 640 =
  17. 17.25% of 740 =
  18. 18.15% of 180 =
  19. 19.5% of 290 =
  20. 20.15% of 890 =
  21. 21.20% of 30 =
  22. 22.15% of 840 =
  23. 23.5% of 480 =
  24. 24.5% of 670 =
  25. 25.20% of 740 =
  26. 26.10% of 780 =
  27. 27.1% of 510 =
  28. 28.20% of 790 =
  29. 29.15% of 450 =
  30. 30.10% of 100 =
  31. 31.15% of 760 =
  32. 32.1% of 760 =
  33. 33.25% of 380 =
  34. 34.25% of 280 =
  35. 35.5% of 360 =
  36. 36.20% of 840 =
  37. 37.50% of 220 =
  38. 38.10% of 190 =
  39. 39.5% of 210 =
  40. 40.25% of 570 =

Answer key

  1. 5.2
  2. 230
  3. 96
  4. 12
  5. 14.5
  6. 19
  7. 126
  8. 130
  9. 22
  10. 4.5
  11. 6.8
  12. 86
  13. 18.5
  14. 117.5
  15. 28
  16. 128
  17. 185
  18. 27
  19. 14.5
  20. 133.5
  21. 6
  22. 126
  23. 24
  24. 33.5
  25. 148
  26. 78
  27. 5.1
  28. 158
  29. 67.5
  30. 10
  31. 114
  32. 7.6
  33. 95
  34. 70
  35. 18
  36. 168
  37. 110
  38. 19
  39. 10.5
  40. 142.5

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