← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 515 · 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 590 =
  2. 2.25% of 170 =
  3. 3.15% of 380 =
  4. 4.1% of 810 =
  5. 5.1% of 640 =
  6. 6.5% of 400 =
  7. 7.25% of 680 =
  8. 8.1% of 30 =
  9. 9.5% of 550 =
  10. 10.1% of 350 =
  11. 11.15% of 740 =
  12. 12.10% of 130 =
  13. 13.5% of 140 =
  14. 14.20% of 130 =
  15. 15.5% of 30 =
  16. 16.10% of 590 =
  17. 17.5% of 690 =
  18. 18.20% of 860 =
  19. 19.1% of 650 =
  20. 20.50% of 780 =
  21. 21.5% of 320 =
  22. 22.15% of 430 =
  23. 23.50% of 210 =
  24. 24.20% of 330 =
  25. 25.15% of 320 =
  26. 26.10% of 120 =
  27. 27.5% of 810 =
  28. 28.5% of 240 =
  29. 29.10% of 230 =
  30. 30.15% of 190 =
  31. 31.20% of 210 =
  32. 32.25% of 630 =
  33. 33.10% of 520 =
  34. 34.50% of 780 =
  35. 35.5% of 330 =
  36. 36.25% of 220 =
  37. 37.1% of 820 =
  38. 38.1% of 260 =
  39. 39.10% of 280 =
  40. 40.50% of 190 =

Answer key

  1. 59
  2. 42.5
  3. 57
  4. 8.1
  5. 6.4
  6. 20
  7. 170
  8. 0.3
  9. 27.5
  10. 3.5
  11. 111
  12. 13
  13. 7
  14. 26
  15. 1.5
  16. 59
  17. 34.5
  18. 172
  19. 6.5
  20. 390
  21. 16
  22. 64.5
  23. 105
  24. 66
  25. 48
  26. 12
  27. 40.5
  28. 12
  29. 23
  30. 28.5
  31. 42
  32. 157.5
  33. 52
  34. 390
  35. 16.5
  36. 55
  37. 8.2
  38. 2.6
  39. 28
  40. 95

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