← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 456 · 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. 1.50% of 170 =
  2. 2.1% of 300 =
  3. 3.10% of 790 =
  4. 4.1% of 30 =
  5. 5.5% of 830 =
  6. 6.5% of 50 =
  7. 7.5% of 420 =
  8. 8.10% of 160 =
  9. 9.20% of 530 =
  10. 10.50% of 830 =
  11. 11.5% of 870 =
  12. 12.5% of 600 =
  13. 13.10% of 730 =
  14. 14.1% of 730 =
  15. 15.15% of 210 =
  16. 16.5% of 880 =
  17. 17.10% of 250 =
  18. 18.10% of 750 =
  19. 19.50% of 840 =
  20. 20.1% of 30 =
  21. 21.25% of 40 =
  22. 22.25% of 600 =
  23. 23.5% of 810 =
  24. 24.50% of 800 =
  25. 25.1% of 520 =
  26. 26.25% of 890 =
  27. 27.20% of 370 =
  28. 28.15% of 710 =
  29. 29.1% of 820 =
  30. 30.10% of 40 =
  31. 31.50% of 120 =
  32. 32.1% of 780 =
  33. 33.20% of 840 =
  34. 34.5% of 590 =
  35. 35.15% of 670 =
  36. 36.20% of 200 =
  37. 37.50% of 480 =
  38. 38.10% of 280 =
  39. 39.10% of 550 =
  40. 40.50% of 550 =

Answer key

  1. 85
  2. 3
  3. 79
  4. 0.3
  5. 41.5
  6. 2.5
  7. 21
  8. 16
  9. 106
  10. 415
  11. 43.5
  12. 30
  13. 73
  14. 7.3
  15. 31.5
  16. 44
  17. 25
  18. 75
  19. 420
  20. 0.3
  21. 10
  22. 150
  23. 40.5
  24. 400
  25. 5.2
  26. 222.5
  27. 74
  28. 106.5
  29. 8.2
  30. 4
  31. 60
  32. 7.8
  33. 168
  34. 29.5
  35. 100.5
  36. 40
  37. 240
  38. 28
  39. 55
  40. 275

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