← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 988 · 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. 1.20% of 160 =
  2. 2.10% of 50 =
  3. 3.5% of 150 =
  4. 4.5% of 680 =
  5. 5.10% of 210 =
  6. 6.50% of 310 =
  7. 7.50% of 20 =
  8. 8.1% of 100 =
  9. 9.5% of 720 =
  10. 10.25% of 520 =
  11. 11.20% of 470 =
  12. 12.15% of 580 =
  13. 13.25% of 100 =
  14. 14.50% of 310 =
  15. 15.5% of 240 =
  16. 16.1% of 800 =
  17. 17.1% of 500 =
  18. 18.5% of 170 =
  19. 19.10% of 270 =
  20. 20.50% of 100 =
  21. 21.15% of 60 =
  22. 22.10% of 550 =
  23. 23.20% of 550 =
  24. 24.1% of 690 =
  25. 25.5% of 440 =
  26. 26.1% of 200 =
  27. 27.25% of 400 =
  28. 28.20% of 170 =
  29. 29.20% of 720 =
  30. 30.5% of 100 =
  31. 31.15% of 600 =
  32. 32.20% of 130 =
  33. 33.5% of 270 =
  34. 34.20% of 630 =
  35. 35.25% of 180 =
  36. 36.5% of 30 =
  37. 37.25% of 30 =
  38. 38.50% of 490 =
  39. 39.5% of 700 =
  40. 40.20% of 60 =

Answer key

  1. 32
  2. 5
  3. 7.5
  4. 34
  5. 21
  6. 155
  7. 10
  8. 1
  9. 36
  10. 130
  11. 94
  12. 87
  13. 25
  14. 155
  15. 12
  16. 8
  17. 5
  18. 8.5
  19. 27
  20. 50
  21. 9
  22. 55
  23. 110
  24. 6.9
  25. 22
  26. 2
  27. 100
  28. 34
  29. 144
  30. 5
  31. 90
  32. 26
  33. 13.5
  34. 126
  35. 45
  36. 1.5
  37. 7.5
  38. 245
  39. 35
  40. 12

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