← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 389 · 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 670 =
  2. 2.10% of 260 =
  3. 3.1% of 580 =
  4. 4.15% of 210 =
  5. 5.1% of 690 =
  6. 6.50% of 120 =
  7. 7.15% of 90 =
  8. 8.25% of 470 =
  9. 9.15% of 50 =
  10. 10.10% of 770 =
  11. 11.5% of 310 =
  12. 12.50% of 60 =
  13. 13.20% of 850 =
  14. 14.10% of 60 =
  15. 15.10% of 300 =
  16. 16.1% of 420 =
  17. 17.20% of 50 =
  18. 18.50% of 300 =
  19. 19.50% of 890 =
  20. 20.15% of 250 =
  21. 21.20% of 780 =
  22. 22.25% of 90 =
  23. 23.5% of 220 =
  24. 24.50% of 300 =
  25. 25.50% of 50 =
  26. 26.15% of 280 =
  27. 27.10% of 480 =
  28. 28.50% of 730 =
  29. 29.10% of 550 =
  30. 30.15% of 130 =
  31. 31.50% of 170 =
  32. 32.15% of 440 =
  33. 33.10% of 730 =
  34. 34.1% of 50 =
  35. 35.5% of 640 =
  36. 36.10% of 100 =
  37. 37.50% of 380 =
  38. 38.5% of 440 =
  39. 39.1% of 260 =
  40. 40.15% of 220 =

Answer key

  1. 33.5
  2. 26
  3. 5.8
  4. 31.5
  5. 6.9
  6. 60
  7. 13.5
  8. 117.5
  9. 7.5
  10. 77
  11. 15.5
  12. 30
  13. 170
  14. 6
  15. 30
  16. 4.2
  17. 10
  18. 150
  19. 445
  20. 37.5
  21. 156
  22. 22.5
  23. 11
  24. 150
  25. 25
  26. 42
  27. 48
  28. 365
  29. 55
  30. 19.5
  31. 85
  32. 66
  33. 73
  34. 0.5
  35. 32
  36. 10
  37. 190
  38. 22
  39. 2.6
  40. 33

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