← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 234 · 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. 1.10% of 260 =
  2. 2.20% of 140 =
  3. 3.5% of 770 =
  4. 4.15% of 90 =
  5. 5.15% of 130 =
  6. 6.5% of 320 =
  7. 7.20% of 90 =
  8. 8.10% of 830 =
  9. 9.10% of 200 =
  10. 10.20% of 470 =
  11. 11.50% of 880 =
  12. 12.1% of 510 =
  13. 13.5% of 810 =
  14. 14.1% of 470 =
  15. 15.10% of 700 =
  16. 16.25% of 240 =
  17. 17.25% of 280 =
  18. 18.50% of 140 =
  19. 19.10% of 870 =
  20. 20.10% of 720 =
  21. 21.20% of 140 =
  22. 22.5% of 160 =
  23. 23.10% of 560 =
  24. 24.15% of 130 =
  25. 25.10% of 690 =
  26. 26.50% of 460 =
  27. 27.20% of 540 =
  28. 28.15% of 660 =
  29. 29.50% of 810 =
  30. 30.50% of 430 =
  31. 31.20% of 410 =
  32. 32.10% of 500 =
  33. 33.5% of 660 =
  34. 34.1% of 230 =
  35. 35.15% of 160 =
  36. 36.1% of 270 =
  37. 37.5% of 610 =
  38. 38.5% of 580 =
  39. 39.5% of 70 =
  40. 40.5% of 150 =

Answer key

  1. 26
  2. 28
  3. 38.5
  4. 13.5
  5. 19.5
  6. 16
  7. 18
  8. 83
  9. 20
  10. 94
  11. 440
  12. 5.1
  13. 40.5
  14. 4.7
  15. 70
  16. 60
  17. 70
  18. 70
  19. 87
  20. 72
  21. 28
  22. 8
  23. 56
  24. 19.5
  25. 69
  26. 230
  27. 108
  28. 99
  29. 405
  30. 215
  31. 82
  32. 50
  33. 33
  34. 2.3
  35. 24
  36. 2.7
  37. 30.5
  38. 29
  39. 3.5
  40. 7.5

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