← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 440 · 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 170 =
  2. 2.50% of 480 =
  3. 3.50% of 590 =
  4. 4.20% of 80 =
  5. 5.10% of 540 =
  6. 6.1% of 400 =
  7. 7.10% of 470 =
  8. 8.10% of 830 =
  9. 9.20% of 740 =
  10. 10.25% of 170 =
  11. 11.10% of 430 =
  12. 12.10% of 620 =
  13. 13.10% of 830 =
  14. 14.50% of 70 =
  15. 15.15% of 170 =
  16. 16.1% of 270 =
  17. 17.1% of 780 =
  18. 18.50% of 490 =
  19. 19.50% of 750 =
  20. 20.50% of 860 =
  21. 21.15% of 160 =
  22. 22.20% of 610 =
  23. 23.5% of 620 =
  24. 24.5% of 550 =
  25. 25.50% of 310 =
  26. 26.20% of 390 =
  27. 27.1% of 410 =
  28. 28.50% of 620 =
  29. 29.25% of 20 =
  30. 30.5% of 550 =
  31. 31.1% of 410 =
  32. 32.1% of 900 =
  33. 33.10% of 100 =
  34. 34.20% of 720 =
  35. 35.15% of 260 =
  36. 36.1% of 640 =
  37. 37.5% of 230 =
  38. 38.15% of 70 =
  39. 39.1% of 240 =
  40. 40.50% of 220 =

Answer key

  1. 42.5
  2. 240
  3. 295
  4. 16
  5. 54
  6. 4
  7. 47
  8. 83
  9. 148
  10. 42.5
  11. 43
  12. 62
  13. 83
  14. 35
  15. 25.5
  16. 2.7
  17. 7.8
  18. 245
  19. 375
  20. 430
  21. 24
  22. 122
  23. 31
  24. 27.5
  25. 155
  26. 78
  27. 4.1
  28. 310
  29. 5
  30. 27.5
  31. 4.1
  32. 9
  33. 10
  34. 144
  35. 39
  36. 6.4
  37. 11.5
  38. 10.5
  39. 2.4
  40. 110

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