← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 69 · 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 850 =
  2. 2.25% of 170 =
  3. 3.25% of 250 =
  4. 4.50% of 170 =
  5. 5.10% of 760 =
  6. 6.10% of 30 =
  7. 7.15% of 800 =
  8. 8.5% of 290 =
  9. 9.5% of 180 =
  10. 10.20% of 30 =
  11. 11.1% of 460 =
  12. 12.25% of 60 =
  13. 13.5% of 340 =
  14. 14.15% of 690 =
  15. 15.20% of 380 =
  16. 16.1% of 780 =
  17. 17.5% of 450 =
  18. 18.1% of 140 =
  19. 19.25% of 430 =
  20. 20.25% of 130 =
  21. 21.10% of 880 =
  22. 22.50% of 70 =
  23. 23.10% of 230 =
  24. 24.10% of 30 =
  25. 25.20% of 430 =
  26. 26.10% of 410 =
  27. 27.5% of 570 =
  28. 28.5% of 620 =
  29. 29.25% of 80 =
  30. 30.20% of 220 =
  31. 31.5% of 260 =
  32. 32.15% of 750 =
  33. 33.25% of 280 =
  34. 34.1% of 280 =
  35. 35.10% of 870 =
  36. 36.25% of 780 =
  37. 37.5% of 750 =
  38. 38.20% of 140 =
  39. 39.10% of 280 =
  40. 40.10% of 820 =

Answer key

  1. 8.5
  2. 42.5
  3. 62.5
  4. 85
  5. 76
  6. 3
  7. 120
  8. 14.5
  9. 9
  10. 6
  11. 4.6
  12. 15
  13. 17
  14. 103.5
  15. 76
  16. 7.8
  17. 22.5
  18. 1.4
  19. 107.5
  20. 32.5
  21. 88
  22. 35
  23. 23
  24. 3
  25. 86
  26. 41
  27. 28.5
  28. 31
  29. 20
  30. 44
  31. 13
  32. 112.5
  33. 70
  34. 2.8
  35. 87
  36. 195
  37. 37.5
  38. 28
  39. 28
  40. 82

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