← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 800 · 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. 1.5% of 830 =
  2. 2.10% of 330 =
  3. 3.1% of 230 =
  4. 4.1% of 390 =
  5. 5.20% of 70 =
  6. 6.5% of 80 =
  7. 7.10% of 210 =
  8. 8.20% of 470 =
  9. 9.5% of 490 =
  10. 10.5% of 200 =
  11. 11.25% of 280 =
  12. 12.25% of 440 =
  13. 13.25% of 900 =
  14. 14.25% of 120 =
  15. 15.15% of 860 =
  16. 16.10% of 630 =
  17. 17.10% of 70 =
  18. 18.5% of 330 =
  19. 19.5% of 70 =
  20. 20.50% of 750 =
  21. 21.5% of 30 =
  22. 22.1% of 110 =
  23. 23.50% of 330 =
  24. 24.25% of 360 =
  25. 25.5% of 330 =
  26. 26.20% of 220 =
  27. 27.15% of 260 =
  28. 28.10% of 70 =
  29. 29.50% of 190 =
  30. 30.50% of 770 =
  31. 31.10% of 800 =
  32. 32.20% of 500 =
  33. 33.5% of 250 =
  34. 34.5% of 320 =
  35. 35.20% of 110 =
  36. 36.20% of 440 =
  37. 37.25% of 110 =
  38. 38.10% of 640 =
  39. 39.15% of 750 =
  40. 40.50% of 570 =

Answer key

  1. 41.5
  2. 33
  3. 2.3
  4. 3.9
  5. 14
  6. 4
  7. 21
  8. 94
  9. 24.5
  10. 10
  11. 70
  12. 110
  13. 225
  14. 30
  15. 129
  16. 63
  17. 7
  18. 16.5
  19. 3.5
  20. 375
  21. 1.5
  22. 1.1
  23. 165
  24. 90
  25. 16.5
  26. 44
  27. 39
  28. 7
  29. 95
  30. 385
  31. 80
  32. 100
  33. 12.5
  34. 16
  35. 22
  36. 88
  37. 27.5
  38. 64
  39. 112.5
  40. 285

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