← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 353 · 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 660 =
  2. 2.10% of 880 =
  3. 3.25% of 220 =
  4. 4.1% of 440 =
  5. 5.1% of 870 =
  6. 6.10% of 300 =
  7. 7.10% of 600 =
  8. 8.5% of 760 =
  9. 9.1% of 850 =
  10. 10.10% of 60 =
  11. 11.25% of 440 =
  12. 12.5% of 350 =
  13. 13.1% of 320 =
  14. 14.50% of 460 =
  15. 15.15% of 210 =
  16. 16.15% of 160 =
  17. 17.25% of 820 =
  18. 18.15% of 70 =
  19. 19.1% of 790 =
  20. 20.15% of 60 =
  21. 21.1% of 690 =
  22. 22.5% of 580 =
  23. 23.50% of 50 =
  24. 24.25% of 700 =
  25. 25.25% of 70 =
  26. 26.20% of 400 =
  27. 27.25% of 80 =
  28. 28.10% of 880 =
  29. 29.10% of 870 =
  30. 30.15% of 590 =
  31. 31.5% of 790 =
  32. 32.5% of 140 =
  33. 33.50% of 880 =
  34. 34.10% of 20 =
  35. 35.5% of 80 =
  36. 36.10% of 500 =
  37. 37.10% of 80 =
  38. 38.1% of 560 =
  39. 39.5% of 730 =
  40. 40.10% of 770 =

Answer key

  1. 66
  2. 88
  3. 55
  4. 4.4
  5. 8.7
  6. 30
  7. 60
  8. 38
  9. 8.5
  10. 6
  11. 110
  12. 17.5
  13. 3.2
  14. 230
  15. 31.5
  16. 24
  17. 205
  18. 10.5
  19. 7.9
  20. 9
  21. 6.9
  22. 29
  23. 25
  24. 175
  25. 17.5
  26. 80
  27. 20
  28. 88
  29. 87
  30. 88.5
  31. 39.5
  32. 7
  33. 440
  34. 2
  35. 4
  36. 50
  37. 8
  38. 5.6
  39. 36.5
  40. 77

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