← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 252 · 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. 1.15% of 690 =
  2. 2.5% of 140 =
  3. 3.1% of 110 =
  4. 4.1% of 140 =
  5. 5.15% of 580 =
  6. 6.10% of 280 =
  7. 7.5% of 620 =
  8. 8.1% of 620 =
  9. 9.50% of 50 =
  10. 10.15% of 550 =
  11. 11.10% of 440 =
  12. 12.50% of 880 =
  13. 13.25% of 150 =
  14. 14.10% of 660 =
  15. 15.10% of 480 =
  16. 16.15% of 300 =
  17. 17.10% of 540 =
  18. 18.50% of 220 =
  19. 19.5% of 410 =
  20. 20.5% of 80 =
  21. 21.10% of 350 =
  22. 22.10% of 560 =
  23. 23.10% of 800 =
  24. 24.5% of 320 =
  25. 25.15% of 160 =
  26. 26.5% of 710 =
  27. 27.10% of 450 =
  28. 28.5% of 740 =
  29. 29.15% of 260 =
  30. 30.10% of 250 =
  31. 31.10% of 720 =
  32. 32.25% of 220 =
  33. 33.5% of 410 =
  34. 34.20% of 420 =
  35. 35.50% of 620 =
  36. 36.1% of 320 =
  37. 37.10% of 460 =
  38. 38.1% of 750 =
  39. 39.10% of 100 =
  40. 40.20% of 130 =

Answer key

  1. 103.5
  2. 7
  3. 1.1
  4. 1.4
  5. 87
  6. 28
  7. 31
  8. 6.2
  9. 25
  10. 82.5
  11. 44
  12. 440
  13. 37.5
  14. 66
  15. 48
  16. 45
  17. 54
  18. 110
  19. 20.5
  20. 4
  21. 35
  22. 56
  23. 80
  24. 16
  25. 24
  26. 35.5
  27. 45
  28. 37
  29. 39
  30. 25
  31. 72
  32. 55
  33. 20.5
  34. 84
  35. 310
  36. 3.2
  37. 46
  38. 7.5
  39. 10
  40. 26

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