← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 348 · 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. 1.1% of 900 =
  2. 2.20% of 470 =
  3. 3.20% of 170 =
  4. 4.10% of 50 =
  5. 5.10% of 900 =
  6. 6.50% of 870 =
  7. 7.25% of 400 =
  8. 8.1% of 40 =
  9. 9.25% of 310 =
  10. 10.50% of 160 =
  11. 11.10% of 720 =
  12. 12.15% of 630 =
  13. 13.10% of 420 =
  14. 14.15% of 660 =
  15. 15.25% of 90 =
  16. 16.15% of 210 =
  17. 17.25% of 80 =
  18. 18.5% of 640 =
  19. 19.15% of 20 =
  20. 20.10% of 570 =
  21. 21.10% of 40 =
  22. 22.1% of 700 =
  23. 23.50% of 670 =
  24. 24.50% of 800 =
  25. 25.25% of 400 =
  26. 26.10% of 350 =
  27. 27.50% of 780 =
  28. 28.20% of 40 =
  29. 29.25% of 760 =
  30. 30.10% of 340 =
  31. 31.1% of 660 =
  32. 32.1% of 470 =
  33. 33.15% of 260 =
  34. 34.25% of 410 =
  35. 35.15% of 820 =
  36. 36.20% of 190 =
  37. 37.1% of 470 =
  38. 38.20% of 740 =
  39. 39.15% of 850 =
  40. 40.15% of 430 =

Answer key

  1. 9
  2. 94
  3. 34
  4. 5
  5. 90
  6. 435
  7. 100
  8. 0.4
  9. 77.5
  10. 80
  11. 72
  12. 94.5
  13. 42
  14. 99
  15. 22.5
  16. 31.5
  17. 20
  18. 32
  19. 3
  20. 57
  21. 4
  22. 7
  23. 335
  24. 400
  25. 100
  26. 35
  27. 390
  28. 8
  29. 190
  30. 34
  31. 6.6
  32. 4.7
  33. 39
  34. 102.5
  35. 123
  36. 38
  37. 4.7
  38. 148
  39. 127.5
  40. 64.5

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