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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 930 · 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 440 =
  2. 2.10% of 550 =
  3. 3.15% of 160 =
  4. 4.5% of 710 =
  5. 5.1% of 390 =
  6. 6.5% of 500 =
  7. 7.15% of 60 =
  8. 8.25% of 630 =
  9. 9.15% of 40 =
  10. 10.5% of 250 =
  11. 11.25% of 610 =
  12. 12.5% of 420 =
  13. 13.20% of 270 =
  14. 14.25% of 480 =
  15. 15.50% of 630 =
  16. 16.5% of 250 =
  17. 17.50% of 800 =
  18. 18.5% of 600 =
  19. 19.25% of 740 =
  20. 20.10% of 210 =
  21. 21.50% of 180 =
  22. 22.10% of 470 =
  23. 23.15% of 330 =
  24. 24.5% of 640 =
  25. 25.5% of 650 =
  26. 26.25% of 600 =
  27. 27.50% of 500 =
  28. 28.10% of 290 =
  29. 29.50% of 80 =
  30. 30.25% of 370 =
  31. 31.5% of 630 =
  32. 32.20% of 600 =
  33. 33.1% of 200 =
  34. 34.5% of 470 =
  35. 35.15% of 410 =
  36. 36.50% of 90 =
  37. 37.25% of 220 =
  38. 38.1% of 460 =
  39. 39.10% of 300 =
  40. 40.1% of 730 =

Answer key

  1. 88
  2. 55
  3. 24
  4. 35.5
  5. 3.9
  6. 25
  7. 9
  8. 157.5
  9. 6
  10. 12.5
  11. 152.5
  12. 21
  13. 54
  14. 120
  15. 315
  16. 12.5
  17. 400
  18. 30
  19. 185
  20. 21
  21. 90
  22. 47
  23. 49.5
  24. 32
  25. 32.5
  26. 150
  27. 250
  28. 29
  29. 40
  30. 92.5
  31. 31.5
  32. 120
  33. 2
  34. 23.5
  35. 61.5
  36. 45
  37. 55
  38. 4.6
  39. 30
  40. 7.3

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