← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 328 · 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 890 =
  2. 2.25% of 150 =
  3. 3.15% of 380 =
  4. 4.10% of 800 =
  5. 5.1% of 390 =
  6. 6.25% of 50 =
  7. 7.20% of 70 =
  8. 8.10% of 310 =
  9. 9.10% of 720 =
  10. 10.25% of 280 =
  11. 11.1% of 530 =
  12. 12.5% of 60 =
  13. 13.20% of 230 =
  14. 14.20% of 800 =
  15. 15.5% of 710 =
  16. 16.10% of 180 =
  17. 17.15% of 810 =
  18. 18.10% of 640 =
  19. 19.5% of 200 =
  20. 20.15% of 400 =
  21. 21.50% of 740 =
  22. 22.50% of 70 =
  23. 23.10% of 900 =
  24. 24.50% of 790 =
  25. 25.5% of 100 =
  26. 26.25% of 420 =
  27. 27.5% of 470 =
  28. 28.15% of 600 =
  29. 29.50% of 640 =
  30. 30.5% of 190 =
  31. 31.5% of 50 =
  32. 32.5% of 120 =
  33. 33.5% of 640 =
  34. 34.10% of 300 =
  35. 35.20% of 850 =
  36. 36.10% of 270 =
  37. 37.50% of 230 =
  38. 38.50% of 440 =
  39. 39.50% of 590 =
  40. 40.1% of 170 =

Answer key

  1. 178
  2. 37.5
  3. 57
  4. 80
  5. 3.9
  6. 12.5
  7. 14
  8. 31
  9. 72
  10. 70
  11. 5.3
  12. 3
  13. 46
  14. 160
  15. 35.5
  16. 18
  17. 121.5
  18. 64
  19. 10
  20. 60
  21. 370
  22. 35
  23. 90
  24. 395
  25. 5
  26. 105
  27. 23.5
  28. 90
  29. 320
  30. 9.5
  31. 2.5
  32. 6
  33. 32
  34. 30
  35. 170
  36. 27
  37. 115
  38. 220
  39. 295
  40. 1.7

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