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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 356 · 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 400 =
  2. 2.20% of 60 =
  3. 3.5% of 220 =
  4. 4.25% of 160 =
  5. 5.50% of 710 =
  6. 6.1% of 660 =
  7. 7.15% of 880 =
  8. 8.25% of 630 =
  9. 9.15% of 800 =
  10. 10.20% of 280 =
  11. 11.50% of 210 =
  12. 12.15% of 640 =
  13. 13.25% of 720 =
  14. 14.50% of 420 =
  15. 15.10% of 170 =
  16. 16.10% of 840 =
  17. 17.5% of 170 =
  18. 18.1% of 660 =
  19. 19.15% of 250 =
  20. 20.25% of 70 =
  21. 21.50% of 780 =
  22. 22.20% of 560 =
  23. 23.15% of 220 =
  24. 24.1% of 580 =
  25. 25.20% of 320 =
  26. 26.1% of 480 =
  27. 27.15% of 320 =
  28. 28.50% of 480 =
  29. 29.20% of 710 =
  30. 30.20% of 740 =
  31. 31.10% of 700 =
  32. 32.25% of 70 =
  33. 33.15% of 730 =
  34. 34.25% of 330 =
  35. 35.50% of 600 =
  36. 36.1% of 80 =
  37. 37.20% of 140 =
  38. 38.25% of 640 =
  39. 39.50% of 700 =
  40. 40.20% of 160 =

Answer key

  1. 4
  2. 12
  3. 11
  4. 40
  5. 355
  6. 6.6
  7. 132
  8. 157.5
  9. 120
  10. 56
  11. 105
  12. 96
  13. 180
  14. 210
  15. 17
  16. 84
  17. 8.5
  18. 6.6
  19. 37.5
  20. 17.5
  21. 390
  22. 112
  23. 33
  24. 5.8
  25. 64
  26. 4.8
  27. 48
  28. 240
  29. 142
  30. 148
  31. 70
  32. 17.5
  33. 109.5
  34. 82.5
  35. 300
  36. 0.8
  37. 28
  38. 160
  39. 350
  40. 32

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