← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 547 · 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. 2.5% of 230 =
  3. 3.20% of 130 =
  4. 4.5% of 680 =
  5. 5.15% of 40 =
  6. 6.10% of 260 =
  7. 7.5% of 110 =
  8. 8.5% of 800 =
  9. 9.20% of 20 =
  10. 10.15% of 20 =
  11. 11.5% of 460 =
  12. 12.5% of 130 =
  13. 13.1% of 220 =
  14. 14.25% of 850 =
  15. 15.5% of 320 =
  16. 16.10% of 890 =
  17. 17.10% of 520 =
  18. 18.1% of 640 =
  19. 19.50% of 860 =
  20. 20.1% of 840 =
  21. 21.10% of 690 =
  22. 22.1% of 30 =
  23. 23.50% of 400 =
  24. 24.50% of 300 =
  25. 25.15% of 580 =
  26. 26.1% of 450 =
  27. 27.25% of 200 =
  28. 28.1% of 380 =
  29. 29.1% of 270 =
  30. 30.50% of 260 =
  31. 31.1% of 110 =
  32. 32.25% of 440 =
  33. 33.10% of 800 =
  34. 34.20% of 90 =
  35. 35.50% of 570 =
  36. 36.50% of 80 =
  37. 37.15% of 310 =
  38. 38.1% of 450 =
  39. 39.1% of 720 =
  40. 40.15% of 290 =

Answer key

  1. 21
  2. 11.5
  3. 26
  4. 34
  5. 6
  6. 26
  7. 5.5
  8. 40
  9. 4
  10. 3
  11. 23
  12. 6.5
  13. 2.2
  14. 212.5
  15. 16
  16. 89
  17. 52
  18. 6.4
  19. 430
  20. 8.4
  21. 69
  22. 0.3
  23. 200
  24. 150
  25. 87
  26. 4.5
  27. 50
  28. 3.8
  29. 2.7
  30. 130
  31. 1.1
  32. 110
  33. 80
  34. 18
  35. 285
  36. 40
  37. 46.5
  38. 4.5
  39. 7.2
  40. 43.5

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