← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 754 · 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 580 =
  2. 2.10% of 860 =
  3. 3.1% of 690 =
  4. 4.10% of 240 =
  5. 5.50% of 530 =
  6. 6.5% of 850 =
  7. 7.10% of 180 =
  8. 8.20% of 350 =
  9. 9.1% of 450 =
  10. 10.1% of 170 =
  11. 11.5% of 820 =
  12. 12.10% of 110 =
  13. 13.10% of 100 =
  14. 14.5% of 160 =
  15. 15.25% of 400 =
  16. 16.1% of 170 =
  17. 17.1% of 160 =
  18. 18.20% of 80 =
  19. 19.25% of 230 =
  20. 20.5% of 210 =
  21. 21.20% of 490 =
  22. 22.15% of 780 =
  23. 23.15% of 140 =
  24. 24.1% of 390 =
  25. 25.25% of 480 =
  26. 26.10% of 330 =
  27. 27.5% of 90 =
  28. 28.15% of 220 =
  29. 29.5% of 560 =
  30. 30.20% of 590 =
  31. 31.1% of 350 =
  32. 32.10% of 370 =
  33. 33.1% of 120 =
  34. 34.25% of 590 =
  35. 35.25% of 150 =
  36. 36.1% of 330 =
  37. 37.25% of 560 =
  38. 38.5% of 850 =
  39. 39.10% of 550 =
  40. 40.5% of 810 =

Answer key

  1. 145
  2. 86
  3. 6.9
  4. 24
  5. 265
  6. 42.5
  7. 18
  8. 70
  9. 4.5
  10. 1.7
  11. 41
  12. 11
  13. 10
  14. 8
  15. 100
  16. 1.7
  17. 1.6
  18. 16
  19. 57.5
  20. 10.5
  21. 98
  22. 117
  23. 21
  24. 3.9
  25. 120
  26. 33
  27. 4.5
  28. 33
  29. 28
  30. 118
  31. 3.5
  32. 37
  33. 1.2
  34. 147.5
  35. 37.5
  36. 3.3
  37. 140
  38. 42.5
  39. 55
  40. 40.5

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