← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 413 · 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 100 =
  2. 2.15% of 300 =
  3. 3.15% of 520 =
  4. 4.20% of 200 =
  5. 5.15% of 140 =
  6. 6.50% of 220 =
  7. 7.10% of 460 =
  8. 8.1% of 550 =
  9. 9.25% of 340 =
  10. 10.25% of 360 =
  11. 11.10% of 730 =
  12. 12.5% of 320 =
  13. 13.50% of 480 =
  14. 14.1% of 400 =
  15. 15.50% of 320 =
  16. 16.50% of 680 =
  17. 17.1% of 90 =
  18. 18.20% of 400 =
  19. 19.50% of 390 =
  20. 20.1% of 400 =
  21. 21.25% of 480 =
  22. 22.25% of 560 =
  23. 23.1% of 390 =
  24. 24.15% of 280 =
  25. 25.1% of 770 =
  26. 26.5% of 870 =
  27. 27.1% of 680 =
  28. 28.1% of 520 =
  29. 29.20% of 640 =
  30. 30.20% of 360 =
  31. 31.5% of 120 =
  32. 32.20% of 320 =
  33. 33.25% of 190 =
  34. 34.5% of 100 =
  35. 35.1% of 400 =
  36. 36.1% of 890 =
  37. 37.20% of 340 =
  38. 38.50% of 120 =
  39. 39.20% of 210 =
  40. 40.15% of 770 =

Answer key

  1. 20
  2. 45
  3. 78
  4. 40
  5. 21
  6. 110
  7. 46
  8. 5.5
  9. 85
  10. 90
  11. 73
  12. 16
  13. 240
  14. 4
  15. 160
  16. 340
  17. 0.9
  18. 80
  19. 195
  20. 4
  21. 120
  22. 140
  23. 3.9
  24. 42
  25. 7.7
  26. 43.5
  27. 6.8
  28. 5.2
  29. 128
  30. 72
  31. 6
  32. 64
  33. 47.5
  34. 5
  35. 4
  36. 8.9
  37. 68
  38. 60
  39. 42
  40. 115.5

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