← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 841 · 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 630 =
  2. 2.15% of 350 =
  3. 3.1% of 600 =
  4. 4.10% of 460 =
  5. 5.10% of 130 =
  6. 6.50% of 130 =
  7. 7.25% of 490 =
  8. 8.5% of 550 =
  9. 9.15% of 160 =
  10. 10.15% of 640 =
  11. 11.50% of 410 =
  12. 12.20% of 120 =
  13. 13.20% of 20 =
  14. 14.50% of 410 =
  15. 15.1% of 610 =
  16. 16.10% of 780 =
  17. 17.25% of 880 =
  18. 18.10% of 400 =
  19. 19.10% of 470 =
  20. 20.20% of 840 =
  21. 21.10% of 490 =
  22. 22.15% of 850 =
  23. 23.20% of 610 =
  24. 24.20% of 310 =
  25. 25.5% of 590 =
  26. 26.50% of 460 =
  27. 27.10% of 550 =
  28. 28.15% of 100 =
  29. 29.50% of 440 =
  30. 30.15% of 410 =
  31. 31.10% of 60 =
  32. 32.20% of 410 =
  33. 33.15% of 390 =
  34. 34.50% of 790 =
  35. 35.10% of 400 =
  36. 36.25% of 110 =
  37. 37.10% of 510 =
  38. 38.5% of 720 =
  39. 39.1% of 400 =
  40. 40.20% of 530 =

Answer key

  1. 31.5
  2. 52.5
  3. 6
  4. 46
  5. 13
  6. 65
  7. 122.5
  8. 27.5
  9. 24
  10. 96
  11. 205
  12. 24
  13. 4
  14. 205
  15. 6.1
  16. 78
  17. 220
  18. 40
  19. 47
  20. 168
  21. 49
  22. 127.5
  23. 122
  24. 62
  25. 29.5
  26. 230
  27. 55
  28. 15
  29. 220
  30. 61.5
  31. 6
  32. 82
  33. 58.5
  34. 395
  35. 40
  36. 27.5
  37. 51
  38. 36
  39. 4
  40. 106

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