← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 475 · 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. 1.25% of 290 =
  2. 2.5% of 850 =
  3. 3.10% of 560 =
  4. 4.50% of 440 =
  5. 5.5% of 540 =
  6. 6.25% of 830 =
  7. 7.25% of 30 =
  8. 8.1% of 110 =
  9. 9.5% of 50 =
  10. 10.20% of 200 =
  11. 11.1% of 630 =
  12. 12.25% of 890 =
  13. 13.15% of 500 =
  14. 14.20% of 50 =
  15. 15.50% of 770 =
  16. 16.15% of 750 =
  17. 17.1% of 210 =
  18. 18.10% of 120 =
  19. 19.5% of 650 =
  20. 20.10% of 40 =
  21. 21.15% of 380 =
  22. 22.5% of 750 =
  23. 23.20% of 460 =
  24. 24.1% of 170 =
  25. 25.5% of 770 =
  26. 26.20% of 750 =
  27. 27.50% of 170 =
  28. 28.20% of 710 =
  29. 29.1% of 320 =
  30. 30.20% of 790 =
  31. 31.10% of 890 =
  32. 32.1% of 90 =
  33. 33.1% of 230 =
  34. 34.10% of 820 =
  35. 35.5% of 280 =
  36. 36.20% of 460 =
  37. 37.20% of 560 =
  38. 38.15% of 110 =
  39. 39.50% of 350 =
  40. 40.1% of 50 =

Answer key

  1. 72.5
  2. 42.5
  3. 56
  4. 220
  5. 27
  6. 207.5
  7. 7.5
  8. 1.1
  9. 2.5
  10. 40
  11. 6.3
  12. 222.5
  13. 75
  14. 10
  15. 385
  16. 112.5
  17. 2.1
  18. 12
  19. 32.5
  20. 4
  21. 57
  22. 37.5
  23. 92
  24. 1.7
  25. 38.5
  26. 150
  27. 85
  28. 142
  29. 3.2
  30. 158
  31. 89
  32. 0.9
  33. 2.3
  34. 82
  35. 14
  36. 92
  37. 112
  38. 16.5
  39. 175
  40. 0.5

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths