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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 216 · 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 100 =
  2. 2.10% of 590 =
  3. 3.5% of 730 =
  4. 4.20% of 240 =
  5. 5.15% of 110 =
  6. 6.1% of 370 =
  7. 7.1% of 140 =
  8. 8.1% of 440 =
  9. 9.10% of 150 =
  10. 10.50% of 530 =
  11. 11.5% of 250 =
  12. 12.50% of 150 =
  13. 13.20% of 400 =
  14. 14.50% of 460 =
  15. 15.15% of 410 =
  16. 16.5% of 560 =
  17. 17.25% of 140 =
  18. 18.5% of 770 =
  19. 19.50% of 180 =
  20. 20.15% of 170 =
  21. 21.10% of 640 =
  22. 22.20% of 860 =
  23. 23.50% of 320 =
  24. 24.15% of 270 =
  25. 25.25% of 900 =
  26. 26.15% of 660 =
  27. 27.15% of 100 =
  28. 28.20% of 700 =
  29. 29.20% of 420 =
  30. 30.25% of 260 =
  31. 31.20% of 880 =
  32. 32.20% of 530 =
  33. 33.1% of 170 =
  34. 34.5% of 320 =
  35. 35.15% of 140 =
  36. 36.1% of 810 =
  37. 37.20% of 20 =
  38. 38.15% of 70 =
  39. 39.15% of 200 =
  40. 40.15% of 770 =

Answer key

  1. 1
  2. 59
  3. 36.5
  4. 48
  5. 16.5
  6. 3.7
  7. 1.4
  8. 4.4
  9. 15
  10. 265
  11. 12.5
  12. 75
  13. 80
  14. 230
  15. 61.5
  16. 28
  17. 35
  18. 38.5
  19. 90
  20. 25.5
  21. 64
  22. 172
  23. 160
  24. 40.5
  25. 225
  26. 99
  27. 15
  28. 140
  29. 84
  30. 65
  31. 176
  32. 106
  33. 1.7
  34. 16
  35. 21
  36. 8.1
  37. 4
  38. 10.5
  39. 30
  40. 115.5

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