← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 614 · 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 450 =
  2. 2.15% of 200 =
  3. 3.1% of 760 =
  4. 4.10% of 670 =
  5. 5.5% of 20 =
  6. 6.50% of 490 =
  7. 7.25% of 300 =
  8. 8.5% of 740 =
  9. 9.10% of 810 =
  10. 10.1% of 320 =
  11. 11.5% of 490 =
  12. 12.10% of 560 =
  13. 13.10% of 350 =
  14. 14.20% of 450 =
  15. 15.25% of 750 =
  16. 16.15% of 60 =
  17. 17.25% of 500 =
  18. 18.25% of 190 =
  19. 19.1% of 390 =
  20. 20.25% of 110 =
  21. 21.20% of 100 =
  22. 22.25% of 450 =
  23. 23.5% of 530 =
  24. 24.50% of 820 =
  25. 25.50% of 880 =
  26. 26.1% of 640 =
  27. 27.20% of 710 =
  28. 28.5% of 370 =
  29. 29.20% of 900 =
  30. 30.50% of 50 =
  31. 31.15% of 520 =
  32. 32.25% of 150 =
  33. 33.15% of 830 =
  34. 34.20% of 30 =
  35. 35.20% of 740 =
  36. 36.5% of 570 =
  37. 37.10% of 490 =
  38. 38.10% of 590 =
  39. 39.10% of 290 =
  40. 40.5% of 40 =

Answer key

  1. 112.5
  2. 30
  3. 7.6
  4. 67
  5. 1
  6. 245
  7. 75
  8. 37
  9. 81
  10. 3.2
  11. 24.5
  12. 56
  13. 35
  14. 90
  15. 187.5
  16. 9
  17. 125
  18. 47.5
  19. 3.9
  20. 27.5
  21. 20
  22. 112.5
  23. 26.5
  24. 410
  25. 440
  26. 6.4
  27. 142
  28. 18.5
  29. 180
  30. 25
  31. 78
  32. 37.5
  33. 124.5
  34. 6
  35. 148
  36. 28.5
  37. 49
  38. 59
  39. 29
  40. 2

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