← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 309 · 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. 1.25% of 430 =
  2. 2.50% of 570 =
  3. 3.10% of 560 =
  4. 4.50% of 220 =
  5. 5.20% of 230 =
  6. 6.20% of 890 =
  7. 7.1% of 840 =
  8. 8.1% of 710 =
  9. 9.15% of 110 =
  10. 10.15% of 60 =
  11. 11.10% of 310 =
  12. 12.50% of 450 =
  13. 13.50% of 670 =
  14. 14.25% of 680 =
  15. 15.10% of 500 =
  16. 16.15% of 870 =
  17. 17.10% of 280 =
  18. 18.20% of 880 =
  19. 19.5% of 390 =
  20. 20.10% of 20 =
  21. 21.1% of 80 =
  22. 22.25% of 690 =
  23. 23.20% of 780 =
  24. 24.1% of 580 =
  25. 25.50% of 50 =
  26. 26.20% of 780 =
  27. 27.20% of 40 =
  28. 28.25% of 820 =
  29. 29.25% of 520 =
  30. 30.1% of 330 =
  31. 31.50% of 140 =
  32. 32.10% of 450 =
  33. 33.5% of 50 =
  34. 34.50% of 870 =
  35. 35.5% of 230 =
  36. 36.15% of 870 =
  37. 37.1% of 750 =
  38. 38.20% of 100 =
  39. 39.5% of 200 =
  40. 40.25% of 500 =

Answer key

  1. 107.5
  2. 285
  3. 56
  4. 110
  5. 46
  6. 178
  7. 8.4
  8. 7.1
  9. 16.5
  10. 9
  11. 31
  12. 225
  13. 335
  14. 170
  15. 50
  16. 130.5
  17. 28
  18. 176
  19. 19.5
  20. 2
  21. 0.8
  22. 172.5
  23. 156
  24. 5.8
  25. 25
  26. 156
  27. 8
  28. 205
  29. 130
  30. 3.3
  31. 70
  32. 45
  33. 2.5
  34. 435
  35. 11.5
  36. 130.5
  37. 7.5
  38. 20
  39. 10
  40. 125

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