← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 586 · 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 570 =
  2. 2.15% of 540 =
  3. 3.1% of 330 =
  4. 4.10% of 90 =
  5. 5.25% of 520 =
  6. 6.50% of 410 =
  7. 7.20% of 570 =
  8. 8.20% of 630 =
  9. 9.15% of 900 =
  10. 10.20% of 760 =
  11. 11.5% of 60 =
  12. 12.25% of 50 =
  13. 13.25% of 60 =
  14. 14.5% of 260 =
  15. 15.5% of 170 =
  16. 16.25% of 840 =
  17. 17.50% of 650 =
  18. 18.5% of 360 =
  19. 19.15% of 280 =
  20. 20.5% of 60 =
  21. 21.15% of 410 =
  22. 22.10% of 530 =
  23. 23.1% of 320 =
  24. 24.5% of 160 =
  25. 25.20% of 540 =
  26. 26.10% of 760 =
  27. 27.1% of 820 =
  28. 28.15% of 300 =
  29. 29.25% of 620 =
  30. 30.5% of 210 =
  31. 31.10% of 30 =
  32. 32.1% of 800 =
  33. 33.5% of 550 =
  34. 34.5% of 410 =
  35. 35.25% of 300 =
  36. 36.15% of 700 =
  37. 37.10% of 210 =
  38. 38.5% of 600 =
  39. 39.5% of 110 =
  40. 40.25% of 670 =

Answer key

  1. 28.5
  2. 81
  3. 3.3
  4. 9
  5. 130
  6. 205
  7. 114
  8. 126
  9. 135
  10. 152
  11. 3
  12. 12.5
  13. 15
  14. 13
  15. 8.5
  16. 210
  17. 325
  18. 18
  19. 42
  20. 3
  21. 61.5
  22. 53
  23. 3.2
  24. 8
  25. 108
  26. 76
  27. 8.2
  28. 45
  29. 155
  30. 10.5
  31. 3
  32. 8
  33. 27.5
  34. 20.5
  35. 75
  36. 105
  37. 21
  38. 30
  39. 5.5
  40. 167.5

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