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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 916 · 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. 1.25% of 890 =
  2. 2.5% of 590 =
  3. 3.10% of 300 =
  4. 4.10% of 60 =
  5. 5.10% of 340 =
  6. 6.50% of 570 =
  7. 7.20% of 860 =
  8. 8.15% of 420 =
  9. 9.20% of 590 =
  10. 10.10% of 460 =
  11. 11.15% of 160 =
  12. 12.50% of 320 =
  13. 13.5% of 350 =
  14. 14.1% of 160 =
  15. 15.20% of 600 =
  16. 16.5% of 700 =
  17. 17.1% of 270 =
  18. 18.15% of 650 =
  19. 19.20% of 30 =
  20. 20.15% of 620 =
  21. 21.10% of 300 =
  22. 22.50% of 60 =
  23. 23.15% of 130 =
  24. 24.15% of 110 =
  25. 25.15% of 330 =
  26. 26.20% of 70 =
  27. 27.10% of 760 =
  28. 28.50% of 210 =
  29. 29.20% of 810 =
  30. 30.15% of 120 =
  31. 31.5% of 390 =
  32. 32.5% of 500 =
  33. 33.20% of 270 =
  34. 34.20% of 130 =
  35. 35.5% of 520 =
  36. 36.5% of 660 =
  37. 37.15% of 550 =
  38. 38.20% of 300 =
  39. 39.20% of 220 =
  40. 40.5% of 120 =

Answer key

  1. 222.5
  2. 29.5
  3. 30
  4. 6
  5. 34
  6. 285
  7. 172
  8. 63
  9. 118
  10. 46
  11. 24
  12. 160
  13. 17.5
  14. 1.6
  15. 120
  16. 35
  17. 2.7
  18. 97.5
  19. 6
  20. 93
  21. 30
  22. 30
  23. 19.5
  24. 16.5
  25. 49.5
  26. 14
  27. 76
  28. 105
  29. 162
  30. 18
  31. 19.5
  32. 25
  33. 54
  34. 26
  35. 26
  36. 33
  37. 82.5
  38. 60
  39. 44
  40. 6

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