← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 358 · 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 420 =
  2. 2.25% of 570 =
  3. 3.50% of 370 =
  4. 4.20% of 410 =
  5. 5.15% of 580 =
  6. 6.5% of 560 =
  7. 7.15% of 460 =
  8. 8.20% of 270 =
  9. 9.1% of 840 =
  10. 10.50% of 170 =
  11. 11.50% of 870 =
  12. 12.15% of 470 =
  13. 13.1% of 90 =
  14. 14.50% of 720 =
  15. 15.50% of 320 =
  16. 16.10% of 420 =
  17. 17.5% of 670 =
  18. 18.1% of 60 =
  19. 19.15% of 50 =
  20. 20.15% of 390 =
  21. 21.1% of 30 =
  22. 22.5% of 270 =
  23. 23.5% of 220 =
  24. 24.25% of 50 =
  25. 25.20% of 250 =
  26. 26.15% of 630 =
  27. 27.10% of 50 =
  28. 28.50% of 550 =
  29. 29.20% of 700 =
  30. 30.20% of 820 =
  31. 31.50% of 220 =
  32. 32.10% of 120 =
  33. 33.10% of 650 =
  34. 34.25% of 550 =
  35. 35.5% of 170 =
  36. 36.50% of 890 =
  37. 37.1% of 630 =
  38. 38.1% of 700 =
  39. 39.5% of 90 =
  40. 40.1% of 460 =

Answer key

  1. 21
  2. 142.5
  3. 185
  4. 82
  5. 87
  6. 28
  7. 69
  8. 54
  9. 8.4
  10. 85
  11. 435
  12. 70.5
  13. 0.9
  14. 360
  15. 160
  16. 42
  17. 33.5
  18. 0.6
  19. 7.5
  20. 58.5
  21. 0.3
  22. 13.5
  23. 11
  24. 12.5
  25. 50
  26. 94.5
  27. 5
  28. 275
  29. 140
  30. 164
  31. 110
  32. 12
  33. 65
  34. 137.5
  35. 8.5
  36. 445
  37. 6.3
  38. 7
  39. 4.5
  40. 4.6

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