← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 1 · 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. 1.15% of 510 =
  2. 2.5% of 360 =
  3. 3.5% of 290 =
  4. 4.50% of 860 =
  5. 5.25% of 300 =
  6. 6.25% of 180 =
  7. 7.50% of 160 =
  8. 8.5% of 240 =
  9. 9.5% of 390 =
  10. 10.20% of 740 =
  11. 11.15% of 520 =
  12. 12.50% of 600 =
  13. 13.1% of 380 =
  14. 14.25% of 290 =
  15. 15.10% of 860 =
  16. 16.1% of 240 =
  17. 17.15% of 500 =
  18. 18.15% of 370 =
  19. 19.1% of 400 =
  20. 20.50% of 780 =
  21. 21.10% of 500 =
  22. 22.1% of 640 =
  23. 23.1% of 190 =
  24. 24.15% of 650 =
  25. 25.5% of 180 =
  26. 26.15% of 160 =
  27. 27.10% of 410 =
  28. 28.15% of 240 =
  29. 29.5% of 60 =
  30. 30.1% of 720 =
  31. 31.50% of 290 =
  32. 32.5% of 250 =
  33. 33.5% of 30 =
  34. 34.1% of 490 =
  35. 35.20% of 270 =
  36. 36.15% of 80 =
  37. 37.50% of 460 =
  38. 38.15% of 170 =
  39. 39.25% of 270 =
  40. 40.1% of 520 =

Answer key

  1. 76.5
  2. 18
  3. 14.5
  4. 430
  5. 75
  6. 45
  7. 80
  8. 12
  9. 19.5
  10. 148
  11. 78
  12. 300
  13. 3.8
  14. 72.5
  15. 86
  16. 2.4
  17. 75
  18. 55.5
  19. 4
  20. 390
  21. 50
  22. 6.4
  23. 1.9
  24. 97.5
  25. 9
  26. 24
  27. 41
  28. 36
  29. 3
  30. 7.2
  31. 145
  32. 12.5
  33. 1.5
  34. 4.9
  35. 54
  36. 12
  37. 230
  38. 25.5
  39. 67.5
  40. 5.2

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