← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 974 · 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 250 =
  2. 2.15% of 520 =
  3. 3.15% of 690 =
  4. 4.5% of 360 =
  5. 5.10% of 690 =
  6. 6.20% of 580 =
  7. 7.15% of 60 =
  8. 8.20% of 280 =
  9. 9.25% of 270 =
  10. 10.25% of 170 =
  11. 11.15% of 140 =
  12. 12.15% of 580 =
  13. 13.20% of 630 =
  14. 14.15% of 420 =
  15. 15.10% of 420 =
  16. 16.10% of 540 =
  17. 17.1% of 760 =
  18. 18.25% of 420 =
  19. 19.5% of 770 =
  20. 20.10% of 690 =
  21. 21.20% of 680 =
  22. 22.5% of 290 =
  23. 23.20% of 830 =
  24. 24.20% of 70 =
  25. 25.1% of 60 =
  26. 26.1% of 110 =
  27. 27.25% of 520 =
  28. 28.20% of 720 =
  29. 29.5% of 210 =
  30. 30.15% of 30 =
  31. 31.25% of 740 =
  32. 32.10% of 280 =
  33. 33.5% of 700 =
  34. 34.15% of 390 =
  35. 35.25% of 460 =
  36. 36.20% of 520 =
  37. 37.25% of 430 =
  38. 38.15% of 70 =
  39. 39.25% of 810 =
  40. 40.25% of 810 =

Answer key

  1. 25
  2. 78
  3. 103.5
  4. 18
  5. 69
  6. 116
  7. 9
  8. 56
  9. 67.5
  10. 42.5
  11. 21
  12. 87
  13. 126
  14. 63
  15. 42
  16. 54
  17. 7.6
  18. 105
  19. 38.5
  20. 69
  21. 136
  22. 14.5
  23. 166
  24. 14
  25. 0.6
  26. 1.1
  27. 130
  28. 144
  29. 10.5
  30. 4.5
  31. 185
  32. 28
  33. 35
  34. 58.5
  35. 115
  36. 104
  37. 107.5
  38. 10.5
  39. 202.5
  40. 202.5

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