← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 437 · 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 290 =
  2. 2.50% of 370 =
  3. 3.5% of 210 =
  4. 4.20% of 850 =
  5. 5.50% of 30 =
  6. 6.1% of 30 =
  7. 7.25% of 160 =
  8. 8.1% of 40 =
  9. 9.15% of 480 =
  10. 10.10% of 670 =
  11. 11.20% of 760 =
  12. 12.25% of 170 =
  13. 13.1% of 220 =
  14. 14.10% of 720 =
  15. 15.5% of 580 =
  16. 16.20% of 690 =
  17. 17.25% of 690 =
  18. 18.1% of 510 =
  19. 19.5% of 240 =
  20. 20.25% of 390 =
  21. 21.15% of 380 =
  22. 22.10% of 360 =
  23. 23.15% of 80 =
  24. 24.5% of 400 =
  25. 25.1% of 830 =
  26. 26.50% of 800 =
  27. 27.20% of 770 =
  28. 28.10% of 770 =
  29. 29.50% of 150 =
  30. 30.10% of 210 =
  31. 31.5% of 20 =
  32. 32.10% of 350 =
  33. 33.5% of 360 =
  34. 34.1% of 750 =
  35. 35.50% of 330 =
  36. 36.1% of 140 =
  37. 37.50% of 440 =
  38. 38.15% of 110 =
  39. 39.5% of 340 =
  40. 40.10% of 110 =

Answer key

  1. 14.5
  2. 185
  3. 10.5
  4. 170
  5. 15
  6. 0.3
  7. 40
  8. 0.4
  9. 72
  10. 67
  11. 152
  12. 42.5
  13. 2.2
  14. 72
  15. 29
  16. 138
  17. 172.5
  18. 5.1
  19. 12
  20. 97.5
  21. 57
  22. 36
  23. 12
  24. 20
  25. 8.3
  26. 400
  27. 154
  28. 77
  29. 75
  30. 21
  31. 1
  32. 35
  33. 18
  34. 7.5
  35. 165
  36. 1.4
  37. 220
  38. 16.5
  39. 17
  40. 11

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