← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 838 · 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 720 =
  2. 2.10% of 670 =
  3. 3.1% of 860 =
  4. 4.50% of 520 =
  5. 5.5% of 840 =
  6. 6.10% of 110 =
  7. 7.5% of 230 =
  8. 8.25% of 590 =
  9. 9.15% of 230 =
  10. 10.20% of 460 =
  11. 11.5% of 900 =
  12. 12.10% of 750 =
  13. 13.25% of 250 =
  14. 14.15% of 200 =
  15. 15.10% of 860 =
  16. 16.5% of 780 =
  17. 17.50% of 20 =
  18. 18.25% of 250 =
  19. 19.5% of 370 =
  20. 20.25% of 110 =
  21. 21.25% of 460 =
  22. 22.20% of 580 =
  23. 23.5% of 830 =
  24. 24.25% of 680 =
  25. 25.15% of 830 =
  26. 26.50% of 40 =
  27. 27.1% of 690 =
  28. 28.1% of 340 =
  29. 29.5% of 480 =
  30. 30.20% of 590 =
  31. 31.50% of 220 =
  32. 32.20% of 860 =
  33. 33.1% of 330 =
  34. 34.1% of 800 =
  35. 35.20% of 310 =
  36. 36.25% of 160 =
  37. 37.10% of 860 =
  38. 38.1% of 240 =
  39. 39.20% of 490 =
  40. 40.5% of 70 =

Answer key

  1. 144
  2. 67
  3. 8.6
  4. 260
  5. 42
  6. 11
  7. 11.5
  8. 147.5
  9. 34.5
  10. 92
  11. 45
  12. 75
  13. 62.5
  14. 30
  15. 86
  16. 39
  17. 10
  18. 62.5
  19. 18.5
  20. 27.5
  21. 115
  22. 116
  23. 41.5
  24. 170
  25. 124.5
  26. 20
  27. 6.9
  28. 3.4
  29. 24
  30. 118
  31. 110
  32. 172
  33. 3.3
  34. 8
  35. 62
  36. 40
  37. 86
  38. 2.4
  39. 98
  40. 3.5

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