← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 675 · 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 280 =
  2. 2.25% of 460 =
  3. 3.15% of 320 =
  4. 4.15% of 330 =
  5. 5.10% of 410 =
  6. 6.1% of 800 =
  7. 7.1% of 790 =
  8. 8.20% of 820 =
  9. 9.1% of 860 =
  10. 10.5% of 390 =
  11. 11.5% of 80 =
  12. 12.5% of 730 =
  13. 13.10% of 590 =
  14. 14.10% of 210 =
  15. 15.50% of 420 =
  16. 16.50% of 250 =
  17. 17.10% of 550 =
  18. 18.5% of 140 =
  19. 19.50% of 640 =
  20. 20.25% of 820 =
  21. 21.10% of 290 =
  22. 22.10% of 680 =
  23. 23.1% of 690 =
  24. 24.20% of 160 =
  25. 25.5% of 60 =
  26. 26.50% of 120 =
  27. 27.5% of 70 =
  28. 28.50% of 840 =
  29. 29.50% of 630 =
  30. 30.25% of 40 =
  31. 31.10% of 480 =
  32. 32.1% of 430 =
  33. 33.5% of 260 =
  34. 34.20% of 270 =
  35. 35.10% of 40 =
  36. 36.1% of 860 =
  37. 37.5% of 230 =
  38. 38.1% of 680 =
  39. 39.15% of 590 =
  40. 40.5% of 760 =

Answer key

  1. 28
  2. 115
  3. 48
  4. 49.5
  5. 41
  6. 8
  7. 7.9
  8. 164
  9. 8.6
  10. 19.5
  11. 4
  12. 36.5
  13. 59
  14. 21
  15. 210
  16. 125
  17. 55
  18. 7
  19. 320
  20. 205
  21. 29
  22. 68
  23. 6.9
  24. 32
  25. 3
  26. 60
  27. 3.5
  28. 420
  29. 315
  30. 10
  31. 48
  32. 4.3
  33. 13
  34. 54
  35. 4
  36. 8.6
  37. 11.5
  38. 6.8
  39. 88.5
  40. 38

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