← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 211 · 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. 1.10% of 640 =
  2. 2.50% of 860 =
  3. 3.1% of 170 =
  4. 4.1% of 360 =
  5. 5.25% of 240 =
  6. 6.1% of 880 =
  7. 7.15% of 440 =
  8. 8.25% of 830 =
  9. 9.1% of 430 =
  10. 10.10% of 280 =
  11. 11.5% of 340 =
  12. 12.5% of 370 =
  13. 13.50% of 580 =
  14. 14.1% of 870 =
  15. 15.10% of 60 =
  16. 16.20% of 320 =
  17. 17.20% of 860 =
  18. 18.50% of 580 =
  19. 19.20% of 570 =
  20. 20.20% of 810 =
  21. 21.15% of 140 =
  22. 22.25% of 870 =
  23. 23.50% of 480 =
  24. 24.1% of 750 =
  25. 25.25% of 410 =
  26. 26.50% of 30 =
  27. 27.10% of 200 =
  28. 28.1% of 380 =
  29. 29.50% of 360 =
  30. 30.25% of 330 =
  31. 31.25% of 890 =
  32. 32.50% of 780 =
  33. 33.25% of 610 =
  34. 34.50% of 370 =
  35. 35.15% of 520 =
  36. 36.10% of 60 =
  37. 37.50% of 460 =
  38. 38.5% of 830 =
  39. 39.15% of 440 =
  40. 40.20% of 710 =

Answer key

  1. 64
  2. 430
  3. 1.7
  4. 3.6
  5. 60
  6. 8.8
  7. 66
  8. 207.5
  9. 4.3
  10. 28
  11. 17
  12. 18.5
  13. 290
  14. 8.7
  15. 6
  16. 64
  17. 172
  18. 290
  19. 114
  20. 162
  21. 21
  22. 217.5
  23. 240
  24. 7.5
  25. 102.5
  26. 15
  27. 20
  28. 3.8
  29. 180
  30. 82.5
  31. 222.5
  32. 390
  33. 152.5
  34. 185
  35. 78
  36. 6
  37. 230
  38. 41.5
  39. 66
  40. 142

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