← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 320 · 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. 1.20% of 770 =
  2. 2.10% of 380 =
  3. 3.15% of 20 =
  4. 4.15% of 640 =
  5. 5.10% of 460 =
  6. 6.5% of 60 =
  7. 7.5% of 150 =
  8. 8.1% of 300 =
  9. 9.20% of 210 =
  10. 10.10% of 100 =
  11. 11.1% of 810 =
  12. 12.10% of 610 =
  13. 13.50% of 820 =
  14. 14.5% of 260 =
  15. 15.5% of 420 =
  16. 16.15% of 740 =
  17. 17.1% of 490 =
  18. 18.1% of 90 =
  19. 19.20% of 190 =
  20. 20.15% of 770 =
  21. 21.5% of 450 =
  22. 22.15% of 740 =
  23. 23.25% of 370 =
  24. 24.5% of 360 =
  25. 25.25% of 400 =
  26. 26.10% of 670 =
  27. 27.10% of 360 =
  28. 28.10% of 260 =
  29. 29.15% of 890 =
  30. 30.1% of 70 =
  31. 31.15% of 760 =
  32. 32.50% of 760 =
  33. 33.15% of 520 =
  34. 34.50% of 370 =
  35. 35.20% of 260 =
  36. 36.10% of 690 =
  37. 37.25% of 490 =
  38. 38.5% of 100 =
  39. 39.20% of 460 =
  40. 40.15% of 820 =

Answer key

  1. 154
  2. 38
  3. 3
  4. 96
  5. 46
  6. 3
  7. 7.5
  8. 3
  9. 42
  10. 10
  11. 8.1
  12. 61
  13. 410
  14. 13
  15. 21
  16. 111
  17. 4.9
  18. 0.9
  19. 38
  20. 115.5
  21. 22.5
  22. 111
  23. 92.5
  24. 18
  25. 100
  26. 67
  27. 36
  28. 26
  29. 133.5
  30. 0.7
  31. 114
  32. 380
  33. 78
  34. 185
  35. 52
  36. 69
  37. 122.5
  38. 5
  39. 92
  40. 123

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