← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 485 · 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. 1.5% of 390 =
  2. 2.25% of 30 =
  3. 3.15% of 710 =
  4. 4.15% of 510 =
  5. 5.50% of 660 =
  6. 6.25% of 450 =
  7. 7.15% of 640 =
  8. 8.1% of 550 =
  9. 9.5% of 70 =
  10. 10.5% of 530 =
  11. 11.5% of 510 =
  12. 12.50% of 850 =
  13. 13.50% of 390 =
  14. 14.50% of 630 =
  15. 15.25% of 420 =
  16. 16.5% of 130 =
  17. 17.10% of 270 =
  18. 18.10% of 70 =
  19. 19.10% of 410 =
  20. 20.5% of 160 =
  21. 21.1% of 90 =
  22. 22.10% of 780 =
  23. 23.10% of 640 =
  24. 24.10% of 110 =
  25. 25.50% of 830 =
  26. 26.10% of 660 =
  27. 27.50% of 470 =
  28. 28.50% of 110 =
  29. 29.15% of 510 =
  30. 30.20% of 130 =
  31. 31.10% of 840 =
  32. 32.5% of 140 =
  33. 33.10% of 610 =
  34. 34.50% of 830 =
  35. 35.10% of 820 =
  36. 36.20% of 20 =
  37. 37.5% of 80 =
  38. 38.15% of 820 =
  39. 39.15% of 410 =
  40. 40.10% of 50 =

Answer key

  1. 19.5
  2. 7.5
  3. 106.5
  4. 76.5
  5. 330
  6. 112.5
  7. 96
  8. 5.5
  9. 3.5
  10. 26.5
  11. 25.5
  12. 425
  13. 195
  14. 315
  15. 105
  16. 6.5
  17. 27
  18. 7
  19. 41
  20. 8
  21. 0.9
  22. 78
  23. 64
  24. 11
  25. 415
  26. 66
  27. 235
  28. 55
  29. 76.5
  30. 26
  31. 84
  32. 7
  33. 61
  34. 415
  35. 82
  36. 4
  37. 4
  38. 123
  39. 61.5
  40. 5

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