← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 394 · 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 190 =
  2. 2.10% of 30 =
  3. 3.25% of 60 =
  4. 4.10% of 550 =
  5. 5.1% of 670 =
  6. 6.15% of 90 =
  7. 7.15% of 320 =
  8. 8.5% of 110 =
  9. 9.10% of 820 =
  10. 10.10% of 550 =
  11. 11.5% of 400 =
  12. 12.5% of 30 =
  13. 13.25% of 220 =
  14. 14.1% of 750 =
  15. 15.20% of 530 =
  16. 16.1% of 130 =
  17. 17.15% of 880 =
  18. 18.10% of 680 =
  19. 19.5% of 560 =
  20. 20.25% of 850 =
  21. 21.15% of 440 =
  22. 22.15% of 100 =
  23. 23.10% of 270 =
  24. 24.20% of 500 =
  25. 25.20% of 140 =
  26. 26.10% of 450 =
  27. 27.15% of 380 =
  28. 28.10% of 540 =
  29. 29.5% of 830 =
  30. 30.25% of 590 =
  31. 31.5% of 790 =
  32. 32.1% of 800 =
  33. 33.25% of 190 =
  34. 34.10% of 610 =
  35. 35.10% of 230 =
  36. 36.10% of 40 =
  37. 37.1% of 720 =
  38. 38.15% of 760 =
  39. 39.10% of 790 =
  40. 40.5% of 270 =

Answer key

  1. 28.5
  2. 3
  3. 15
  4. 55
  5. 6.7
  6. 13.5
  7. 48
  8. 5.5
  9. 82
  10. 55
  11. 20
  12. 1.5
  13. 55
  14. 7.5
  15. 106
  16. 1.3
  17. 132
  18. 68
  19. 28
  20. 212.5
  21. 66
  22. 15
  23. 27
  24. 100
  25. 28
  26. 45
  27. 57
  28. 54
  29. 41.5
  30. 147.5
  31. 39.5
  32. 8
  33. 47.5
  34. 61
  35. 23
  36. 4
  37. 7.2
  38. 114
  39. 79
  40. 13.5

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