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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 611 · 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 380 =
  2. 2.20% of 140 =
  3. 3.15% of 330 =
  4. 4.50% of 160 =
  5. 5.15% of 350 =
  6. 6.50% of 430 =
  7. 7.10% of 610 =
  8. 8.20% of 40 =
  9. 9.50% of 740 =
  10. 10.15% of 490 =
  11. 11.10% of 800 =
  12. 12.5% of 170 =
  13. 13.50% of 120 =
  14. 14.5% of 270 =
  15. 15.10% of 720 =
  16. 16.50% of 780 =
  17. 17.50% of 240 =
  18. 18.50% of 230 =
  19. 19.10% of 40 =
  20. 20.15% of 60 =
  21. 21.50% of 180 =
  22. 22.10% of 360 =
  23. 23.5% of 640 =
  24. 24.20% of 560 =
  25. 25.10% of 720 =
  26. 26.25% of 820 =
  27. 27.1% of 200 =
  28. 28.5% of 140 =
  29. 29.25% of 700 =
  30. 30.25% of 30 =
  31. 31.15% of 60 =
  32. 32.50% of 60 =
  33. 33.5% of 120 =
  34. 34.1% of 200 =
  35. 35.1% of 550 =
  36. 36.1% of 230 =
  37. 37.5% of 490 =
  38. 38.20% of 260 =
  39. 39.20% of 20 =
  40. 40.25% of 110 =

Answer key

  1. 76
  2. 28
  3. 49.5
  4. 80
  5. 52.5
  6. 215
  7. 61
  8. 8
  9. 370
  10. 73.5
  11. 80
  12. 8.5
  13. 60
  14. 13.5
  15. 72
  16. 390
  17. 120
  18. 115
  19. 4
  20. 9
  21. 90
  22. 36
  23. 32
  24. 112
  25. 72
  26. 205
  27. 2
  28. 7
  29. 175
  30. 7.5
  31. 9
  32. 30
  33. 6
  34. 2
  35. 5.5
  36. 2.3
  37. 24.5
  38. 52
  39. 4
  40. 27.5

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