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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 541 · 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 810 =
  2. 2.5% of 540 =
  3. 3.1% of 860 =
  4. 4.50% of 590 =
  5. 5.50% of 60 =
  6. 6.5% of 30 =
  7. 7.10% of 630 =
  8. 8.15% of 230 =
  9. 9.20% of 900 =
  10. 10.1% of 270 =
  11. 11.25% of 810 =
  12. 12.10% of 670 =
  13. 13.5% of 430 =
  14. 14.50% of 610 =
  15. 15.15% of 690 =
  16. 16.20% of 250 =
  17. 17.10% of 140 =
  18. 18.15% of 870 =
  19. 19.50% of 210 =
  20. 20.5% of 290 =
  21. 21.10% of 460 =
  22. 22.15% of 200 =
  23. 23.20% of 510 =
  24. 24.10% of 320 =
  25. 25.10% of 190 =
  26. 26.15% of 800 =
  27. 27.50% of 770 =
  28. 28.10% of 620 =
  29. 29.25% of 700 =
  30. 30.10% of 70 =
  31. 31.5% of 780 =
  32. 32.25% of 740 =
  33. 33.5% of 190 =
  34. 34.5% of 800 =
  35. 35.10% of 350 =
  36. 36.10% of 900 =
  37. 37.1% of 60 =
  38. 38.20% of 610 =
  39. 39.15% of 320 =
  40. 40.25% of 530 =

Answer key

  1. 8.1
  2. 27
  3. 8.6
  4. 295
  5. 30
  6. 1.5
  7. 63
  8. 34.5
  9. 180
  10. 2.7
  11. 202.5
  12. 67
  13. 21.5
  14. 305
  15. 103.5
  16. 50
  17. 14
  18. 130.5
  19. 105
  20. 14.5
  21. 46
  22. 30
  23. 102
  24. 32
  25. 19
  26. 120
  27. 385
  28. 62
  29. 175
  30. 7
  31. 39
  32. 185
  33. 9.5
  34. 40
  35. 35
  36. 90
  37. 0.6
  38. 122
  39. 48
  40. 132.5

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