← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 755 · 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. 1.25% of 570 =
  2. 2.50% of 500 =
  3. 3.10% of 450 =
  4. 4.10% of 660 =
  5. 5.20% of 60 =
  6. 6.1% of 210 =
  7. 7.50% of 380 =
  8. 8.5% of 640 =
  9. 9.10% of 600 =
  10. 10.20% of 150 =
  11. 11.50% of 680 =
  12. 12.20% of 20 =
  13. 13.10% of 350 =
  14. 14.5% of 170 =
  15. 15.5% of 450 =
  16. 16.1% of 520 =
  17. 17.25% of 210 =
  18. 18.5% of 390 =
  19. 19.20% of 740 =
  20. 20.5% of 790 =
  21. 21.20% of 310 =
  22. 22.1% of 340 =
  23. 23.1% of 320 =
  24. 24.15% of 400 =
  25. 25.10% of 50 =
  26. 26.50% of 490 =
  27. 27.50% of 250 =
  28. 28.20% of 210 =
  29. 29.20% of 280 =
  30. 30.5% of 290 =
  31. 31.5% of 380 =
  32. 32.15% of 200 =
  33. 33.1% of 120 =
  34. 34.50% of 890 =
  35. 35.1% of 710 =
  36. 36.50% of 360 =
  37. 37.20% of 70 =
  38. 38.5% of 400 =
  39. 39.10% of 240 =
  40. 40.20% of 540 =

Answer key

  1. 142.5
  2. 250
  3. 45
  4. 66
  5. 12
  6. 2.1
  7. 190
  8. 32
  9. 60
  10. 30
  11. 340
  12. 4
  13. 35
  14. 8.5
  15. 22.5
  16. 5.2
  17. 52.5
  18. 19.5
  19. 148
  20. 39.5
  21. 62
  22. 3.4
  23. 3.2
  24. 60
  25. 5
  26. 245
  27. 125
  28. 42
  29. 56
  30. 14.5
  31. 19
  32. 30
  33. 1.2
  34. 445
  35. 7.1
  36. 180
  37. 14
  38. 20
  39. 24
  40. 108

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