← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 98 · 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 890 =
  2. 2.20% of 740 =
  3. 3.20% of 170 =
  4. 4.50% of 310 =
  5. 5.1% of 140 =
  6. 6.5% of 800 =
  7. 7.5% of 140 =
  8. 8.20% of 890 =
  9. 9.5% of 140 =
  10. 10.50% of 870 =
  11. 11.15% of 680 =
  12. 12.25% of 260 =
  13. 13.10% of 680 =
  14. 14.10% of 750 =
  15. 15.1% of 870 =
  16. 16.5% of 250 =
  17. 17.50% of 390 =
  18. 18.50% of 210 =
  19. 19.20% of 750 =
  20. 20.10% of 820 =
  21. 21.25% of 880 =
  22. 22.10% of 150 =
  23. 23.20% of 140 =
  24. 24.10% of 140 =
  25. 25.1% of 680 =
  26. 26.50% of 550 =
  27. 27.15% of 320 =
  28. 28.10% of 130 =
  29. 29.5% of 310 =
  30. 30.10% of 180 =
  31. 31.25% of 290 =
  32. 32.50% of 690 =
  33. 33.15% of 120 =
  34. 34.5% of 480 =
  35. 35.25% of 230 =
  36. 36.5% of 360 =
  37. 37.10% of 660 =
  38. 38.10% of 410 =
  39. 39.20% of 510 =
  40. 40.1% of 160 =

Answer key

  1. 178
  2. 148
  3. 34
  4. 155
  5. 1.4
  6. 40
  7. 7
  8. 178
  9. 7
  10. 435
  11. 102
  12. 65
  13. 68
  14. 75
  15. 8.7
  16. 12.5
  17. 195
  18. 105
  19. 150
  20. 82
  21. 220
  22. 15
  23. 28
  24. 14
  25. 6.8
  26. 275
  27. 48
  28. 13
  29. 15.5
  30. 18
  31. 72.5
  32. 345
  33. 18
  34. 24
  35. 57.5
  36. 18
  37. 66
  38. 41
  39. 102
  40. 1.6

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