← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 486 · 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. 1.20% of 150 =
  2. 2.20% of 300 =
  3. 3.25% of 890 =
  4. 4.1% of 240 =
  5. 5.15% of 140 =
  6. 6.50% of 220 =
  7. 7.1% of 700 =
  8. 8.20% of 100 =
  9. 9.10% of 550 =
  10. 10.15% of 460 =
  11. 11.10% of 70 =
  12. 12.10% of 490 =
  13. 13.20% of 780 =
  14. 14.20% of 650 =
  15. 15.25% of 170 =
  16. 16.25% of 70 =
  17. 17.20% of 720 =
  18. 18.25% of 810 =
  19. 19.50% of 900 =
  20. 20.20% of 220 =
  21. 21.15% of 590 =
  22. 22.5% of 300 =
  23. 23.50% of 170 =
  24. 24.15% of 170 =
  25. 25.10% of 60 =
  26. 26.5% of 550 =
  27. 27.10% of 20 =
  28. 28.1% of 70 =
  29. 29.1% of 330 =
  30. 30.1% of 20 =
  31. 31.1% of 900 =
  32. 32.20% of 630 =
  33. 33.10% of 590 =
  34. 34.25% of 390 =
  35. 35.10% of 210 =
  36. 36.25% of 350 =
  37. 37.10% of 570 =
  38. 38.50% of 30 =
  39. 39.5% of 480 =
  40. 40.25% of 160 =

Answer key

  1. 30
  2. 60
  3. 222.5
  4. 2.4
  5. 21
  6. 110
  7. 7
  8. 20
  9. 55
  10. 69
  11. 7
  12. 49
  13. 156
  14. 130
  15. 42.5
  16. 17.5
  17. 144
  18. 202.5
  19. 450
  20. 44
  21. 88.5
  22. 15
  23. 85
  24. 25.5
  25. 6
  26. 27.5
  27. 2
  28. 0.7
  29. 3.3
  30. 0.2
  31. 9
  32. 126
  33. 59
  34. 97.5
  35. 21
  36. 87.5
  37. 57
  38. 15
  39. 24
  40. 40

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