← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 2 · 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 510 =
  2. 2.5% of 900 =
  3. 3.5% of 360 =
  4. 4.1% of 580 =
  5. 5.15% of 780 =
  6. 6.15% of 410 =
  7. 7.1% of 360 =
  8. 8.50% of 340 =
  9. 9.15% of 390 =
  10. 10.5% of 680 =
  11. 11.50% of 350 =
  12. 12.5% of 500 =
  13. 13.10% of 650 =
  14. 14.5% of 320 =
  15. 15.1% of 510 =
  16. 16.5% of 220 =
  17. 17.20% of 400 =
  18. 18.5% of 440 =
  19. 19.10% of 670 =
  20. 20.50% of 90 =
  21. 21.1% of 240 =
  22. 22.5% of 390 =
  23. 23.25% of 20 =
  24. 24.15% of 530 =
  25. 25.25% of 670 =
  26. 26.50% of 220 =
  27. 27.1% of 30 =
  28. 28.5% of 210 =
  29. 29.10% of 720 =
  30. 30.5% of 590 =
  31. 31.25% of 370 =
  32. 32.20% of 330 =
  33. 33.5% of 210 =
  34. 34.1% of 790 =
  35. 35.20% of 550 =
  36. 36.10% of 400 =
  37. 37.50% of 380 =
  38. 38.1% of 100 =
  39. 39.10% of 210 =
  40. 40.15% of 700 =

Answer key

  1. 5.1
  2. 45
  3. 18
  4. 5.8
  5. 117
  6. 61.5
  7. 3.6
  8. 170
  9. 58.5
  10. 34
  11. 175
  12. 25
  13. 65
  14. 16
  15. 5.1
  16. 11
  17. 80
  18. 22
  19. 67
  20. 45
  21. 2.4
  22. 19.5
  23. 5
  24. 79.5
  25. 167.5
  26. 110
  27. 0.3
  28. 10.5
  29. 72
  30. 29.5
  31. 92.5
  32. 66
  33. 10.5
  34. 7.9
  35. 110
  36. 40
  37. 190
  38. 1
  39. 21
  40. 105

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