← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 411 · 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 140 =
  2. 2.25% of 30 =
  3. 3.15% of 40 =
  4. 4.1% of 220 =
  5. 5.5% of 60 =
  6. 6.50% of 790 =
  7. 7.1% of 420 =
  8. 8.15% of 650 =
  9. 9.15% of 400 =
  10. 10.25% of 600 =
  11. 11.10% of 20 =
  12. 12.15% of 720 =
  13. 13.25% of 730 =
  14. 14.25% of 770 =
  15. 15.15% of 420 =
  16. 16.25% of 250 =
  17. 17.50% of 60 =
  18. 18.15% of 280 =
  19. 19.1% of 450 =
  20. 20.15% of 40 =
  21. 21.10% of 420 =
  22. 22.10% of 280 =
  23. 23.15% of 340 =
  24. 24.1% of 800 =
  25. 25.15% of 330 =
  26. 26.20% of 100 =
  27. 27.5% of 570 =
  28. 28.10% of 460 =
  29. 29.20% of 20 =
  30. 30.1% of 260 =
  31. 31.15% of 860 =
  32. 32.25% of 420 =
  33. 33.20% of 50 =
  34. 34.15% of 610 =
  35. 35.20% of 120 =
  36. 36.25% of 540 =
  37. 37.1% of 430 =
  38. 38.15% of 740 =
  39. 39.10% of 250 =
  40. 40.10% of 480 =

Answer key

  1. 1.4
  2. 7.5
  3. 6
  4. 2.2
  5. 3
  6. 395
  7. 4.2
  8. 97.5
  9. 60
  10. 150
  11. 2
  12. 108
  13. 182.5
  14. 192.5
  15. 63
  16. 62.5
  17. 30
  18. 42
  19. 4.5
  20. 6
  21. 42
  22. 28
  23. 51
  24. 8
  25. 49.5
  26. 20
  27. 28.5
  28. 46
  29. 4
  30. 2.6
  31. 129
  32. 105
  33. 10
  34. 91.5
  35. 24
  36. 135
  37. 4.3
  38. 111
  39. 25
  40. 48

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