← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 99 · 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. 1.10% of 260 =
  2. 2.20% of 20 =
  3. 3.1% of 900 =
  4. 4.20% of 60 =
  5. 5.15% of 310 =
  6. 6.1% of 460 =
  7. 7.20% of 730 =
  8. 8.5% of 520 =
  9. 9.25% of 710 =
  10. 10.15% of 140 =
  11. 11.20% of 800 =
  12. 12.10% of 440 =
  13. 13.50% of 890 =
  14. 14.1% of 820 =
  15. 15.20% of 50 =
  16. 16.20% of 320 =
  17. 17.20% of 150 =
  18. 18.25% of 650 =
  19. 19.5% of 670 =
  20. 20.10% of 550 =
  21. 21.50% of 760 =
  22. 22.20% of 470 =
  23. 23.15% of 650 =
  24. 24.25% of 480 =
  25. 25.15% of 660 =
  26. 26.1% of 140 =
  27. 27.1% of 240 =
  28. 28.15% of 630 =
  29. 29.10% of 540 =
  30. 30.10% of 160 =
  31. 31.10% of 580 =
  32. 32.10% of 900 =
  33. 33.20% of 110 =
  34. 34.25% of 250 =
  35. 35.1% of 270 =
  36. 36.20% of 460 =
  37. 37.20% of 140 =
  38. 38.25% of 470 =
  39. 39.1% of 180 =
  40. 40.25% of 80 =

Answer key

  1. 26
  2. 4
  3. 9
  4. 12
  5. 46.5
  6. 4.6
  7. 146
  8. 26
  9. 177.5
  10. 21
  11. 160
  12. 44
  13. 445
  14. 8.2
  15. 10
  16. 64
  17. 30
  18. 162.5
  19. 33.5
  20. 55
  21. 380
  22. 94
  23. 97.5
  24. 120
  25. 99
  26. 1.4
  27. 2.4
  28. 94.5
  29. 54
  30. 16
  31. 58
  32. 90
  33. 22
  34. 62.5
  35. 2.7
  36. 92
  37. 28
  38. 117.5
  39. 1.8
  40. 20

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