← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 855 · 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 550 =
  2. 2.1% of 390 =
  3. 3.1% of 50 =
  4. 4.10% of 840 =
  5. 5.10% of 120 =
  6. 6.20% of 900 =
  7. 7.25% of 120 =
  8. 8.20% of 60 =
  9. 9.25% of 90 =
  10. 10.15% of 90 =
  11. 11.50% of 50 =
  12. 12.1% of 110 =
  13. 13.20% of 620 =
  14. 14.25% of 760 =
  15. 15.1% of 80 =
  16. 16.10% of 450 =
  17. 17.20% of 220 =
  18. 18.25% of 340 =
  19. 19.50% of 350 =
  20. 20.20% of 350 =
  21. 21.25% of 750 =
  22. 22.20% of 210 =
  23. 23.15% of 160 =
  24. 24.15% of 140 =
  25. 25.15% of 720 =
  26. 26.1% of 730 =
  27. 27.20% of 770 =
  28. 28.25% of 110 =
  29. 29.5% of 610 =
  30. 30.15% of 260 =
  31. 31.20% of 180 =
  32. 32.5% of 690 =
  33. 33.50% of 730 =
  34. 34.15% of 490 =
  35. 35.15% of 60 =
  36. 36.1% of 750 =
  37. 37.1% of 310 =
  38. 38.15% of 60 =
  39. 39.5% of 400 =
  40. 40.15% of 170 =

Answer key

  1. 82.5
  2. 3.9
  3. 0.5
  4. 84
  5. 12
  6. 180
  7. 30
  8. 12
  9. 22.5
  10. 13.5
  11. 25
  12. 1.1
  13. 124
  14. 190
  15. 0.8
  16. 45
  17. 44
  18. 85
  19. 175
  20. 70
  21. 187.5
  22. 42
  23. 24
  24. 21
  25. 108
  26. 7.3
  27. 154
  28. 27.5
  29. 30.5
  30. 39
  31. 36
  32. 34.5
  33. 365
  34. 73.5
  35. 9
  36. 7.5
  37. 3.1
  38. 9
  39. 20
  40. 25.5

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