← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 44 · 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 570 =
  2. 2.1% of 830 =
  3. 3.15% of 840 =
  4. 4.50% of 210 =
  5. 5.20% of 70 =
  6. 6.50% of 90 =
  7. 7.25% of 760 =
  8. 8.25% of 170 =
  9. 9.20% of 660 =
  10. 10.1% of 200 =
  11. 11.50% of 170 =
  12. 12.1% of 90 =
  13. 13.5% of 120 =
  14. 14.20% of 640 =
  15. 15.25% of 430 =
  16. 16.20% of 280 =
  17. 17.5% of 790 =
  18. 18.10% of 250 =
  19. 19.5% of 290 =
  20. 20.5% of 810 =
  21. 21.15% of 420 =
  22. 22.15% of 480 =
  23. 23.10% of 580 =
  24. 24.15% of 460 =
  25. 25.1% of 500 =
  26. 26.20% of 660 =
  27. 27.25% of 110 =
  28. 28.20% of 160 =
  29. 29.20% of 200 =
  30. 30.1% of 740 =
  31. 31.20% of 80 =
  32. 32.15% of 740 =
  33. 33.10% of 390 =
  34. 34.5% of 580 =
  35. 35.50% of 670 =
  36. 36.15% of 100 =
  37. 37.1% of 720 =
  38. 38.15% of 90 =
  39. 39.5% of 620 =
  40. 40.5% of 500 =

Answer key

  1. 28.5
  2. 8.3
  3. 126
  4. 105
  5. 14
  6. 45
  7. 190
  8. 42.5
  9. 132
  10. 2
  11. 85
  12. 0.9
  13. 6
  14. 128
  15. 107.5
  16. 56
  17. 39.5
  18. 25
  19. 14.5
  20. 40.5
  21. 63
  22. 72
  23. 58
  24. 69
  25. 5
  26. 132
  27. 27.5
  28. 32
  29. 40
  30. 7.4
  31. 16
  32. 111
  33. 39
  34. 29
  35. 335
  36. 15
  37. 7.2
  38. 13.5
  39. 31
  40. 25

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