← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 147 · 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. 1.25% of 130 =
  2. 2.20% of 840 =
  3. 3.15% of 440 =
  4. 4.50% of 90 =
  5. 5.1% of 660 =
  6. 6.1% of 540 =
  7. 7.15% of 70 =
  8. 8.10% of 490 =
  9. 9.20% of 840 =
  10. 10.25% of 270 =
  11. 11.5% of 610 =
  12. 12.5% of 30 =
  13. 13.5% of 220 =
  14. 14.20% of 310 =
  15. 15.20% of 610 =
  16. 16.10% of 640 =
  17. 17.50% of 240 =
  18. 18.5% of 260 =
  19. 19.15% of 380 =
  20. 20.5% of 470 =
  21. 21.1% of 80 =
  22. 22.15% of 400 =
  23. 23.5% of 180 =
  24. 24.20% of 860 =
  25. 25.5% of 290 =
  26. 26.25% of 140 =
  27. 27.5% of 100 =
  28. 28.10% of 20 =
  29. 29.25% of 870 =
  30. 30.10% of 900 =
  31. 31.1% of 750 =
  32. 32.20% of 230 =
  33. 33.50% of 190 =
  34. 34.10% of 700 =
  35. 35.25% of 170 =
  36. 36.10% of 230 =
  37. 37.25% of 740 =
  38. 38.5% of 220 =
  39. 39.1% of 70 =
  40. 40.15% of 830 =

Answer key

  1. 32.5
  2. 168
  3. 66
  4. 45
  5. 6.6
  6. 5.4
  7. 10.5
  8. 49
  9. 168
  10. 67.5
  11. 30.5
  12. 1.5
  13. 11
  14. 62
  15. 122
  16. 64
  17. 120
  18. 13
  19. 57
  20. 23.5
  21. 0.8
  22. 60
  23. 9
  24. 172
  25. 14.5
  26. 35
  27. 5
  28. 2
  29. 217.5
  30. 90
  31. 7.5
  32. 46
  33. 95
  34. 70
  35. 42.5
  36. 23
  37. 185
  38. 11
  39. 0.7
  40. 124.5

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