← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 690 · 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. 1.10% of 280 =
  2. 2.10% of 840 =
  3. 3.20% of 400 =
  4. 4.20% of 650 =
  5. 5.50% of 420 =
  6. 6.15% of 20 =
  7. 7.10% of 490 =
  8. 8.50% of 400 =
  9. 9.20% of 400 =
  10. 10.1% of 820 =
  11. 11.5% of 500 =
  12. 12.15% of 560 =
  13. 13.15% of 590 =
  14. 14.10% of 710 =
  15. 15.15% of 690 =
  16. 16.5% of 890 =
  17. 17.25% of 670 =
  18. 18.15% of 340 =
  19. 19.15% of 320 =
  20. 20.15% of 680 =
  21. 21.1% of 20 =
  22. 22.5% of 790 =
  23. 23.20% of 280 =
  24. 24.20% of 530 =
  25. 25.50% of 820 =
  26. 26.15% of 500 =
  27. 27.5% of 710 =
  28. 28.5% of 780 =
  29. 29.50% of 620 =
  30. 30.50% of 440 =
  31. 31.50% of 20 =
  32. 32.5% of 270 =
  33. 33.10% of 450 =
  34. 34.5% of 230 =
  35. 35.25% of 400 =
  36. 36.10% of 170 =
  37. 37.1% of 590 =
  38. 38.5% of 210 =
  39. 39.50% of 240 =
  40. 40.15% of 870 =

Answer key

  1. 28
  2. 84
  3. 80
  4. 130
  5. 210
  6. 3
  7. 49
  8. 200
  9. 80
  10. 8.2
  11. 25
  12. 84
  13. 88.5
  14. 71
  15. 103.5
  16. 44.5
  17. 167.5
  18. 51
  19. 48
  20. 102
  21. 0.2
  22. 39.5
  23. 56
  24. 106
  25. 410
  26. 75
  27. 35.5
  28. 39
  29. 310
  30. 220
  31. 10
  32. 13.5
  33. 45
  34. 11.5
  35. 100
  36. 17
  37. 5.9
  38. 10.5
  39. 120
  40. 130.5

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