← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 628 · 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. 1.20% of 330 =
  2. 2.5% of 260 =
  3. 3.20% of 790 =
  4. 4.50% of 270 =
  5. 5.1% of 140 =
  6. 6.10% of 110 =
  7. 7.20% of 170 =
  8. 8.5% of 370 =
  9. 9.50% of 510 =
  10. 10.10% of 820 =
  11. 11.5% of 80 =
  12. 12.15% of 80 =
  13. 13.50% of 520 =
  14. 14.25% of 600 =
  15. 15.50% of 140 =
  16. 16.1% of 110 =
  17. 17.15% of 570 =
  18. 18.10% of 880 =
  19. 19.50% of 170 =
  20. 20.15% of 120 =
  21. 21.10% of 50 =
  22. 22.25% of 170 =
  23. 23.5% of 850 =
  24. 24.20% of 800 =
  25. 25.1% of 640 =
  26. 26.1% of 140 =
  27. 27.5% of 450 =
  28. 28.5% of 390 =
  29. 29.5% of 210 =
  30. 30.15% of 200 =
  31. 31.25% of 510 =
  32. 32.5% of 420 =
  33. 33.50% of 520 =
  34. 34.20% of 420 =
  35. 35.50% of 110 =
  36. 36.15% of 720 =
  37. 37.25% of 530 =
  38. 38.1% of 800 =
  39. 39.50% of 170 =
  40. 40.20% of 660 =

Answer key

  1. 66
  2. 13
  3. 158
  4. 135
  5. 1.4
  6. 11
  7. 34
  8. 18.5
  9. 255
  10. 82
  11. 4
  12. 12
  13. 260
  14. 150
  15. 70
  16. 1.1
  17. 85.5
  18. 88
  19. 85
  20. 18
  21. 5
  22. 42.5
  23. 42.5
  24. 160
  25. 6.4
  26. 1.4
  27. 22.5
  28. 19.5
  29. 10.5
  30. 30
  31. 127.5
  32. 21
  33. 260
  34. 84
  35. 55
  36. 108
  37. 132.5
  38. 8
  39. 85
  40. 132

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