← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 305 · 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 870 =
  2. 2.25% of 80 =
  3. 3.1% of 460 =
  4. 4.1% of 300 =
  5. 5.1% of 280 =
  6. 6.1% of 170 =
  7. 7.5% of 470 =
  8. 8.15% of 60 =
  9. 9.1% of 260 =
  10. 10.25% of 30 =
  11. 11.20% of 740 =
  12. 12.50% of 450 =
  13. 13.20% of 30 =
  14. 14.15% of 570 =
  15. 15.25% of 390 =
  16. 16.25% of 370 =
  17. 17.50% of 740 =
  18. 18.20% of 750 =
  19. 19.5% of 300 =
  20. 20.10% of 240 =
  21. 21.25% of 570 =
  22. 22.50% of 300 =
  23. 23.10% of 140 =
  24. 24.20% of 610 =
  25. 25.10% of 770 =
  26. 26.5% of 230 =
  27. 27.15% of 770 =
  28. 28.15% of 540 =
  29. 29.1% of 350 =
  30. 30.1% of 440 =
  31. 31.1% of 740 =
  32. 32.20% of 890 =
  33. 33.1% of 670 =
  34. 34.25% of 440 =
  35. 35.20% of 860 =
  36. 36.20% of 640 =
  37. 37.10% of 50 =
  38. 38.10% of 710 =
  39. 39.10% of 290 =
  40. 40.1% of 630 =

Answer key

  1. 217.5
  2. 20
  3. 4.6
  4. 3
  5. 2.8
  6. 1.7
  7. 23.5
  8. 9
  9. 2.6
  10. 7.5
  11. 148
  12. 225
  13. 6
  14. 85.5
  15. 97.5
  16. 92.5
  17. 370
  18. 150
  19. 15
  20. 24
  21. 142.5
  22. 150
  23. 14
  24. 122
  25. 77
  26. 11.5
  27. 115.5
  28. 81
  29. 3.5
  30. 4.4
  31. 7.4
  32. 178
  33. 6.7
  34. 110
  35. 172
  36. 128
  37. 5
  38. 71
  39. 29
  40. 6.3

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