← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 829 · 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. 1.1% of 340 =
  2. 2.1% of 450 =
  3. 3.1% of 180 =
  4. 4.5% of 690 =
  5. 5.10% of 380 =
  6. 6.10% of 50 =
  7. 7.50% of 440 =
  8. 8.5% of 790 =
  9. 9.10% of 230 =
  10. 10.25% of 190 =
  11. 11.50% of 200 =
  12. 12.50% of 650 =
  13. 13.15% of 410 =
  14. 14.5% of 710 =
  15. 15.10% of 650 =
  16. 16.10% of 80 =
  17. 17.20% of 170 =
  18. 18.15% of 20 =
  19. 19.50% of 200 =
  20. 20.20% of 820 =
  21. 21.5% of 260 =
  22. 22.5% of 160 =
  23. 23.50% of 610 =
  24. 24.5% of 850 =
  25. 25.1% of 140 =
  26. 26.5% of 440 =
  27. 27.20% of 70 =
  28. 28.5% of 790 =
  29. 29.15% of 270 =
  30. 30.5% of 560 =
  31. 31.15% of 340 =
  32. 32.25% of 300 =
  33. 33.5% of 260 =
  34. 34.25% of 560 =
  35. 35.25% of 660 =
  36. 36.1% of 290 =
  37. 37.10% of 360 =
  38. 38.10% of 780 =
  39. 39.1% of 440 =
  40. 40.50% of 630 =

Answer key

  1. 3.4
  2. 4.5
  3. 1.8
  4. 34.5
  5. 38
  6. 5
  7. 220
  8. 39.5
  9. 23
  10. 47.5
  11. 100
  12. 325
  13. 61.5
  14. 35.5
  15. 65
  16. 8
  17. 34
  18. 3
  19. 100
  20. 164
  21. 13
  22. 8
  23. 305
  24. 42.5
  25. 1.4
  26. 22
  27. 14
  28. 39.5
  29. 40.5
  30. 28
  31. 51
  32. 75
  33. 13
  34. 140
  35. 165
  36. 2.9
  37. 36
  38. 78
  39. 4.4
  40. 315

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