← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 453 · 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 650 =
  2. 2.10% of 290 =
  3. 3.10% of 750 =
  4. 4.25% of 500 =
  5. 5.10% of 290 =
  6. 6.10% of 50 =
  7. 7.50% of 110 =
  8. 8.5% of 360 =
  9. 9.5% of 130 =
  10. 10.10% of 110 =
  11. 11.15% of 40 =
  12. 12.15% of 880 =
  13. 13.20% of 30 =
  14. 14.20% of 420 =
  15. 15.5% of 140 =
  16. 16.1% of 650 =
  17. 17.1% of 570 =
  18. 18.5% of 180 =
  19. 19.25% of 430 =
  20. 20.20% of 510 =
  21. 21.5% of 120 =
  22. 22.10% of 790 =
  23. 23.25% of 600 =
  24. 24.50% of 130 =
  25. 25.50% of 450 =
  26. 26.5% of 320 =
  27. 27.10% of 200 =
  28. 28.25% of 250 =
  29. 29.25% of 620 =
  30. 30.5% of 460 =
  31. 31.5% of 200 =
  32. 32.5% of 640 =
  33. 33.10% of 810 =
  34. 34.15% of 810 =
  35. 35.10% of 90 =
  36. 36.10% of 850 =
  37. 37.20% of 620 =
  38. 38.20% of 280 =
  39. 39.5% of 340 =
  40. 40.25% of 670 =

Answer key

  1. 65
  2. 29
  3. 75
  4. 125
  5. 29
  6. 5
  7. 55
  8. 18
  9. 6.5
  10. 11
  11. 6
  12. 132
  13. 6
  14. 84
  15. 7
  16. 6.5
  17. 5.7
  18. 9
  19. 107.5
  20. 102
  21. 6
  22. 79
  23. 150
  24. 65
  25. 225
  26. 16
  27. 20
  28. 62.5
  29. 155
  30. 23
  31. 10
  32. 32
  33. 81
  34. 121.5
  35. 9
  36. 85
  37. 124
  38. 56
  39. 17
  40. 167.5

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