← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 65 · 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. 1.1% of 530 =
  2. 2.50% of 670 =
  3. 3.10% of 400 =
  4. 4.20% of 60 =
  5. 5.25% of 120 =
  6. 6.5% of 470 =
  7. 7.50% of 170 =
  8. 8.1% of 600 =
  9. 9.25% of 600 =
  10. 10.20% of 210 =
  11. 11.10% of 540 =
  12. 12.20% of 140 =
  13. 13.50% of 590 =
  14. 14.10% of 360 =
  15. 15.1% of 720 =
  16. 16.1% of 560 =
  17. 17.10% of 410 =
  18. 18.5% of 160 =
  19. 19.1% of 290 =
  20. 20.5% of 110 =
  21. 21.10% of 110 =
  22. 22.1% of 870 =
  23. 23.25% of 100 =
  24. 24.5% of 460 =
  25. 25.20% of 450 =
  26. 26.1% of 430 =
  27. 27.25% of 620 =
  28. 28.50% of 430 =
  29. 29.20% of 140 =
  30. 30.20% of 540 =
  31. 31.1% of 660 =
  32. 32.15% of 650 =
  33. 33.20% of 270 =
  34. 34.10% of 710 =
  35. 35.50% of 850 =
  36. 36.10% of 290 =
  37. 37.1% of 70 =
  38. 38.25% of 410 =
  39. 39.20% of 340 =
  40. 40.5% of 140 =

Answer key

  1. 5.3
  2. 335
  3. 40
  4. 12
  5. 30
  6. 23.5
  7. 85
  8. 6
  9. 150
  10. 42
  11. 54
  12. 28
  13. 295
  14. 36
  15. 7.2
  16. 5.6
  17. 41
  18. 8
  19. 2.9
  20. 5.5
  21. 11
  22. 8.7
  23. 25
  24. 23
  25. 90
  26. 4.3
  27. 155
  28. 215
  29. 28
  30. 108
  31. 6.6
  32. 97.5
  33. 54
  34. 71
  35. 425
  36. 29
  37. 0.7
  38. 102.5
  39. 68
  40. 7

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