← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 388 · 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 410 =
  2. 2.20% of 200 =
  3. 3.25% of 60 =
  4. 4.15% of 850 =
  5. 5.15% of 540 =
  6. 6.15% of 180 =
  7. 7.10% of 60 =
  8. 8.25% of 220 =
  9. 9.5% of 120 =
  10. 10.20% of 500 =
  11. 11.25% of 260 =
  12. 12.50% of 80 =
  13. 13.20% of 230 =
  14. 14.25% of 260 =
  15. 15.15% of 590 =
  16. 16.10% of 180 =
  17. 17.25% of 180 =
  18. 18.5% of 630 =
  19. 19.10% of 660 =
  20. 20.25% of 150 =
  21. 21.20% of 80 =
  22. 22.10% of 670 =
  23. 23.15% of 20 =
  24. 24.5% of 470 =
  25. 25.15% of 880 =
  26. 26.1% of 70 =
  27. 27.5% of 330 =
  28. 28.10% of 340 =
  29. 29.20% of 340 =
  30. 30.5% of 330 =
  31. 31.10% of 220 =
  32. 32.1% of 390 =
  33. 33.5% of 200 =
  34. 34.10% of 20 =
  35. 35.50% of 30 =
  36. 36.20% of 420 =
  37. 37.15% of 380 =
  38. 38.10% of 320 =
  39. 39.25% of 430 =
  40. 40.5% of 190 =

Answer key

  1. 4.1
  2. 40
  3. 15
  4. 127.5
  5. 81
  6. 27
  7. 6
  8. 55
  9. 6
  10. 100
  11. 65
  12. 40
  13. 46
  14. 65
  15. 88.5
  16. 18
  17. 45
  18. 31.5
  19. 66
  20. 37.5
  21. 16
  22. 67
  23. 3
  24. 23.5
  25. 132
  26. 0.7
  27. 16.5
  28. 34
  29. 68
  30. 16.5
  31. 22
  32. 3.9
  33. 10
  34. 2
  35. 15
  36. 84
  37. 57
  38. 32
  39. 107.5
  40. 9.5

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