← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 709 · 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. 1.15% of 850 =
  2. 2.50% of 390 =
  3. 3.25% of 610 =
  4. 4.5% of 210 =
  5. 5.15% of 50 =
  6. 6.10% of 870 =
  7. 7.1% of 140 =
  8. 8.1% of 70 =
  9. 9.20% of 90 =
  10. 10.20% of 240 =
  11. 11.15% of 110 =
  12. 12.5% of 410 =
  13. 13.50% of 190 =
  14. 14.50% of 890 =
  15. 15.1% of 260 =
  16. 16.20% of 730 =
  17. 17.10% of 120 =
  18. 18.5% of 330 =
  19. 19.25% of 500 =
  20. 20.1% of 500 =
  21. 21.5% of 740 =
  22. 22.5% of 860 =
  23. 23.20% of 300 =
  24. 24.50% of 330 =
  25. 25.5% of 190 =
  26. 26.50% of 530 =
  27. 27.10% of 400 =
  28. 28.25% of 330 =
  29. 29.15% of 520 =
  30. 30.10% of 660 =
  31. 31.15% of 70 =
  32. 32.20% of 440 =
  33. 33.50% of 540 =
  34. 34.1% of 200 =
  35. 35.25% of 390 =
  36. 36.10% of 450 =
  37. 37.20% of 110 =
  38. 38.1% of 850 =
  39. 39.5% of 570 =
  40. 40.50% of 390 =

Answer key

  1. 127.5
  2. 195
  3. 152.5
  4. 10.5
  5. 7.5
  6. 87
  7. 1.4
  8. 0.7
  9. 18
  10. 48
  11. 16.5
  12. 20.5
  13. 95
  14. 445
  15. 2.6
  16. 146
  17. 12
  18. 16.5
  19. 125
  20. 5
  21. 37
  22. 43
  23. 60
  24. 165
  25. 9.5
  26. 265
  27. 40
  28. 82.5
  29. 78
  30. 66
  31. 10.5
  32. 88
  33. 270
  34. 2
  35. 97.5
  36. 45
  37. 22
  38. 8.5
  39. 28.5
  40. 195

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