← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 34 · 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. 1.10% of 140 =
  2. 2.20% of 280 =
  3. 3.10% of 540 =
  4. 4.1% of 590 =
  5. 5.20% of 570 =
  6. 6.25% of 840 =
  7. 7.1% of 880 =
  8. 8.5% of 490 =
  9. 9.25% of 800 =
  10. 10.25% of 350 =
  11. 11.5% of 140 =
  12. 12.20% of 630 =
  13. 13.25% of 690 =
  14. 14.20% of 40 =
  15. 15.25% of 360 =
  16. 16.50% of 500 =
  17. 17.1% of 890 =
  18. 18.5% of 890 =
  19. 19.15% of 410 =
  20. 20.1% of 820 =
  21. 21.15% of 30 =
  22. 22.5% of 630 =
  23. 23.10% of 780 =
  24. 24.15% of 360 =
  25. 25.20% of 290 =
  26. 26.10% of 360 =
  27. 27.10% of 340 =
  28. 28.20% of 320 =
  29. 29.50% of 120 =
  30. 30.25% of 840 =
  31. 31.10% of 320 =
  32. 32.5% of 780 =
  33. 33.5% of 190 =
  34. 34.25% of 690 =
  35. 35.1% of 60 =
  36. 36.25% of 550 =
  37. 37.20% of 320 =
  38. 38.1% of 250 =
  39. 39.20% of 130 =
  40. 40.15% of 320 =

Answer key

  1. 14
  2. 56
  3. 54
  4. 5.9
  5. 114
  6. 210
  7. 8.8
  8. 24.5
  9. 200
  10. 87.5
  11. 7
  12. 126
  13. 172.5
  14. 8
  15. 90
  16. 250
  17. 8.9
  18. 44.5
  19. 61.5
  20. 8.2
  21. 4.5
  22. 31.5
  23. 78
  24. 54
  25. 58
  26. 36
  27. 34
  28. 64
  29. 60
  30. 210
  31. 32
  32. 39
  33. 9.5
  34. 172.5
  35. 0.6
  36. 137.5
  37. 64
  38. 2.5
  39. 26
  40. 48

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