← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 160 · 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 310 =
  2. 2.20% of 490 =
  3. 3.25% of 480 =
  4. 4.50% of 300 =
  5. 5.50% of 710 =
  6. 6.5% of 310 =
  7. 7.25% of 620 =
  8. 8.1% of 60 =
  9. 9.1% of 670 =
  10. 10.20% of 490 =
  11. 11.10% of 740 =
  12. 12.5% of 60 =
  13. 13.50% of 140 =
  14. 14.50% of 20 =
  15. 15.25% of 460 =
  16. 16.25% of 160 =
  17. 17.1% of 700 =
  18. 18.1% of 540 =
  19. 19.5% of 270 =
  20. 20.25% of 640 =
  21. 21.25% of 610 =
  22. 22.1% of 110 =
  23. 23.15% of 30 =
  24. 24.25% of 670 =
  25. 25.25% of 40 =
  26. 26.50% of 200 =
  27. 27.50% of 840 =
  28. 28.15% of 50 =
  29. 29.20% of 240 =
  30. 30.50% of 170 =
  31. 31.5% of 60 =
  32. 32.1% of 30 =
  33. 33.5% of 370 =
  34. 34.1% of 480 =
  35. 35.10% of 530 =
  36. 36.15% of 670 =
  37. 37.15% of 720 =
  38. 38.25% of 330 =
  39. 39.25% of 790 =
  40. 40.25% of 330 =

Answer key

  1. 77.5
  2. 98
  3. 120
  4. 150
  5. 355
  6. 15.5
  7. 155
  8. 0.6
  9. 6.7
  10. 98
  11. 74
  12. 3
  13. 70
  14. 10
  15. 115
  16. 40
  17. 7
  18. 5.4
  19. 13.5
  20. 160
  21. 152.5
  22. 1.1
  23. 4.5
  24. 167.5
  25. 10
  26. 100
  27. 420
  28. 7.5
  29. 48
  30. 85
  31. 3
  32. 0.3
  33. 18.5
  34. 4.8
  35. 53
  36. 100.5
  37. 108
  38. 82.5
  39. 197.5
  40. 82.5

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