← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 683 · 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 600 =
  2. 2.25% of 830 =
  3. 3.10% of 480 =
  4. 4.50% of 400 =
  5. 5.25% of 70 =
  6. 6.10% of 390 =
  7. 7.1% of 850 =
  8. 8.10% of 130 =
  9. 9.50% of 230 =
  10. 10.20% of 170 =
  11. 11.10% of 590 =
  12. 12.20% of 770 =
  13. 13.5% of 790 =
  14. 14.20% of 710 =
  15. 15.15% of 40 =
  16. 16.1% of 110 =
  17. 17.15% of 260 =
  18. 18.1% of 520 =
  19. 19.20% of 160 =
  20. 20.5% of 810 =
  21. 21.25% of 140 =
  22. 22.15% of 490 =
  23. 23.5% of 630 =
  24. 24.50% of 240 =
  25. 25.25% of 220 =
  26. 26.1% of 480 =
  27. 27.50% of 580 =
  28. 28.1% of 440 =
  29. 29.25% of 130 =
  30. 30.5% of 80 =
  31. 31.5% of 610 =
  32. 32.20% of 860 =
  33. 33.25% of 430 =
  34. 34.10% of 240 =
  35. 35.15% of 20 =
  36. 36.10% of 360 =
  37. 37.50% of 800 =
  38. 38.20% of 630 =
  39. 39.1% of 230 =
  40. 40.25% of 270 =

Answer key

  1. 60
  2. 207.5
  3. 48
  4. 200
  5. 17.5
  6. 39
  7. 8.5
  8. 13
  9. 115
  10. 34
  11. 59
  12. 154
  13. 39.5
  14. 142
  15. 6
  16. 1.1
  17. 39
  18. 5.2
  19. 32
  20. 40.5
  21. 35
  22. 73.5
  23. 31.5
  24. 120
  25. 55
  26. 4.8
  27. 290
  28. 4.4
  29. 32.5
  30. 4
  31. 30.5
  32. 172
  33. 107.5
  34. 24
  35. 3
  36. 36
  37. 400
  38. 126
  39. 2.3
  40. 67.5

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