← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 549 · 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 410 =
  2. 2.25% of 110 =
  3. 3.10% of 590 =
  4. 4.5% of 770 =
  5. 5.25% of 680 =
  6. 6.10% of 150 =
  7. 7.50% of 430 =
  8. 8.15% of 400 =
  9. 9.50% of 680 =
  10. 10.25% of 440 =
  11. 11.50% of 490 =
  12. 12.5% of 480 =
  13. 13.50% of 190 =
  14. 14.50% of 230 =
  15. 15.15% of 830 =
  16. 16.1% of 240 =
  17. 17.20% of 780 =
  18. 18.1% of 820 =
  19. 19.25% of 470 =
  20. 20.20% of 500 =
  21. 21.50% of 400 =
  22. 22.15% of 250 =
  23. 23.5% of 30 =
  24. 24.20% of 620 =
  25. 25.5% of 790 =
  26. 26.5% of 550 =
  27. 27.10% of 210 =
  28. 28.15% of 310 =
  29. 29.20% of 580 =
  30. 30.1% of 430 =
  31. 31.20% of 230 =
  32. 32.20% of 720 =
  33. 33.20% of 300 =
  34. 34.1% of 200 =
  35. 35.25% of 890 =
  36. 36.20% of 550 =
  37. 37.1% of 430 =
  38. 38.20% of 540 =
  39. 39.5% of 670 =
  40. 40.25% of 500 =

Answer key

  1. 41
  2. 27.5
  3. 59
  4. 38.5
  5. 170
  6. 15
  7. 215
  8. 60
  9. 340
  10. 110
  11. 245
  12. 24
  13. 95
  14. 115
  15. 124.5
  16. 2.4
  17. 156
  18. 8.2
  19. 117.5
  20. 100
  21. 200
  22. 37.5
  23. 1.5
  24. 124
  25. 39.5
  26. 27.5
  27. 21
  28. 46.5
  29. 116
  30. 4.3
  31. 46
  32. 144
  33. 60
  34. 2
  35. 222.5
  36. 110
  37. 4.3
  38. 108
  39. 33.5
  40. 125

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