← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 248 · 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. 1.5% of 400 =
  2. 2.5% of 30 =
  3. 3.25% of 860 =
  4. 4.15% of 600 =
  5. 5.5% of 260 =
  6. 6.15% of 560 =
  7. 7.10% of 660 =
  8. 8.10% of 200 =
  9. 9.10% of 560 =
  10. 10.50% of 480 =
  11. 11.50% of 900 =
  12. 12.50% of 830 =
  13. 13.10% of 220 =
  14. 14.15% of 560 =
  15. 15.25% of 510 =
  16. 16.10% of 390 =
  17. 17.20% of 550 =
  18. 18.5% of 730 =
  19. 19.15% of 740 =
  20. 20.25% of 350 =
  21. 21.15% of 80 =
  22. 22.15% of 420 =
  23. 23.5% of 730 =
  24. 24.5% of 790 =
  25. 25.20% of 30 =
  26. 26.5% of 730 =
  27. 27.20% of 210 =
  28. 28.25% of 110 =
  29. 29.50% of 20 =
  30. 30.5% of 290 =
  31. 31.10% of 690 =
  32. 32.50% of 840 =
  33. 33.5% of 460 =
  34. 34.10% of 200 =
  35. 35.25% of 100 =
  36. 36.15% of 540 =
  37. 37.1% of 250 =
  38. 38.5% of 370 =
  39. 39.10% of 880 =
  40. 40.5% of 330 =

Answer key

  1. 20
  2. 1.5
  3. 215
  4. 90
  5. 13
  6. 84
  7. 66
  8. 20
  9. 56
  10. 240
  11. 450
  12. 415
  13. 22
  14. 84
  15. 127.5
  16. 39
  17. 110
  18. 36.5
  19. 111
  20. 87.5
  21. 12
  22. 63
  23. 36.5
  24. 39.5
  25. 6
  26. 36.5
  27. 42
  28. 27.5
  29. 10
  30. 14.5
  31. 69
  32. 420
  33. 23
  34. 20
  35. 25
  36. 81
  37. 2.5
  38. 18.5
  39. 88
  40. 16.5

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