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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 759 · 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 680 =
  2. 2.10% of 470 =
  3. 3.10% of 650 =
  4. 4.5% of 210 =
  5. 5.50% of 620 =
  6. 6.15% of 230 =
  7. 7.10% of 40 =
  8. 8.20% of 270 =
  9. 9.15% of 60 =
  10. 10.15% of 170 =
  11. 11.20% of 330 =
  12. 12.20% of 110 =
  13. 13.20% of 800 =
  14. 14.1% of 580 =
  15. 15.25% of 50 =
  16. 16.10% of 860 =
  17. 17.10% of 370 =
  18. 18.25% of 250 =
  19. 19.15% of 50 =
  20. 20.10% of 80 =
  21. 21.10% of 830 =
  22. 22.15% of 240 =
  23. 23.20% of 320 =
  24. 24.1% of 850 =
  25. 25.50% of 160 =
  26. 26.50% of 880 =
  27. 27.1% of 80 =
  28. 28.15% of 140 =
  29. 29.20% of 120 =
  30. 30.20% of 830 =
  31. 31.15% of 770 =
  32. 32.50% of 480 =
  33. 33.20% of 290 =
  34. 34.10% of 750 =
  35. 35.1% of 890 =
  36. 36.5% of 480 =
  37. 37.20% of 140 =
  38. 38.50% of 60 =
  39. 39.25% of 660 =
  40. 40.25% of 890 =

Answer key

  1. 136
  2. 47
  3. 65
  4. 10.5
  5. 310
  6. 34.5
  7. 4
  8. 54
  9. 9
  10. 25.5
  11. 66
  12. 22
  13. 160
  14. 5.8
  15. 12.5
  16. 86
  17. 37
  18. 62.5
  19. 7.5
  20. 8
  21. 83
  22. 36
  23. 64
  24. 8.5
  25. 80
  26. 440
  27. 0.8
  28. 21
  29. 24
  30. 166
  31. 115.5
  32. 240
  33. 58
  34. 75
  35. 8.9
  36. 24
  37. 28
  38. 30
  39. 165
  40. 222.5

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