← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 307 · 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 80 =
  2. 2.15% of 470 =
  3. 3.50% of 690 =
  4. 4.20% of 540 =
  5. 5.1% of 710 =
  6. 6.5% of 410 =
  7. 7.10% of 320 =
  8. 8.20% of 90 =
  9. 9.1% of 270 =
  10. 10.1% of 490 =
  11. 11.5% of 760 =
  12. 12.5% of 90 =
  13. 13.15% of 270 =
  14. 14.20% of 850 =
  15. 15.20% of 260 =
  16. 16.5% of 160 =
  17. 17.20% of 560 =
  18. 18.25% of 860 =
  19. 19.15% of 50 =
  20. 20.10% of 330 =
  21. 21.10% of 860 =
  22. 22.15% of 20 =
  23. 23.10% of 440 =
  24. 24.50% of 640 =
  25. 25.20% of 370 =
  26. 26.10% of 180 =
  27. 27.15% of 710 =
  28. 28.50% of 90 =
  29. 29.25% of 730 =
  30. 30.20% of 260 =
  31. 31.20% of 490 =
  32. 32.20% of 220 =
  33. 33.25% of 50 =
  34. 34.50% of 900 =
  35. 35.5% of 130 =
  36. 36.5% of 450 =
  37. 37.1% of 450 =
  38. 38.10% of 70 =
  39. 39.1% of 30 =
  40. 40.5% of 180 =

Answer key

  1. 12
  2. 70.5
  3. 345
  4. 108
  5. 7.1
  6. 20.5
  7. 32
  8. 18
  9. 2.7
  10. 4.9
  11. 38
  12. 4.5
  13. 40.5
  14. 170
  15. 52
  16. 8
  17. 112
  18. 215
  19. 7.5
  20. 33
  21. 86
  22. 3
  23. 44
  24. 320
  25. 74
  26. 18
  27. 106.5
  28. 45
  29. 182.5
  30. 52
  31. 98
  32. 44
  33. 12.5
  34. 450
  35. 6.5
  36. 22.5
  37. 4.5
  38. 7
  39. 0.3
  40. 9

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