← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 127 · 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. 1.25% of 70 =
  2. 2.1% of 170 =
  3. 3.20% of 150 =
  4. 4.1% of 890 =
  5. 5.1% of 260 =
  6. 6.5% of 460 =
  7. 7.5% of 470 =
  8. 8.10% of 650 =
  9. 9.5% of 660 =
  10. 10.5% of 270 =
  11. 11.20% of 700 =
  12. 12.15% of 310 =
  13. 13.20% of 110 =
  14. 14.1% of 780 =
  15. 15.15% of 740 =
  16. 16.5% of 150 =
  17. 17.1% of 710 =
  18. 18.10% of 100 =
  19. 19.15% of 800 =
  20. 20.15% of 370 =
  21. 21.50% of 840 =
  22. 22.25% of 390 =
  23. 23.25% of 210 =
  24. 24.10% of 40 =
  25. 25.50% of 820 =
  26. 26.1% of 220 =
  27. 27.5% of 870 =
  28. 28.10% of 270 =
  29. 29.1% of 600 =
  30. 30.25% of 580 =
  31. 31.25% of 260 =
  32. 32.20% of 160 =
  33. 33.15% of 70 =
  34. 34.20% of 420 =
  35. 35.50% of 690 =
  36. 36.5% of 780 =
  37. 37.5% of 290 =
  38. 38.5% of 410 =
  39. 39.15% of 240 =
  40. 40.15% of 820 =

Answer key

  1. 17.5
  2. 1.7
  3. 30
  4. 8.9
  5. 2.6
  6. 23
  7. 23.5
  8. 65
  9. 33
  10. 13.5
  11. 140
  12. 46.5
  13. 22
  14. 7.8
  15. 111
  16. 7.5
  17. 7.1
  18. 10
  19. 120
  20. 55.5
  21. 420
  22. 97.5
  23. 52.5
  24. 4
  25. 410
  26. 2.2
  27. 43.5
  28. 27
  29. 6
  30. 145
  31. 65
  32. 32
  33. 10.5
  34. 84
  35. 345
  36. 39
  37. 14.5
  38. 20.5
  39. 36
  40. 123

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