← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 634 · 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 790 =
  2. 2.10% of 640 =
  3. 3.5% of 570 =
  4. 4.10% of 510 =
  5. 5.1% of 280 =
  6. 6.50% of 470 =
  7. 7.15% of 860 =
  8. 8.50% of 250 =
  9. 9.10% of 730 =
  10. 10.50% of 340 =
  11. 11.1% of 530 =
  12. 12.25% of 330 =
  13. 13.15% of 440 =
  14. 14.5% of 710 =
  15. 15.10% of 770 =
  16. 16.50% of 490 =
  17. 17.15% of 820 =
  18. 18.10% of 530 =
  19. 19.25% of 710 =
  20. 20.10% of 760 =
  21. 21.10% of 240 =
  22. 22.25% of 610 =
  23. 23.50% of 510 =
  24. 24.25% of 110 =
  25. 25.1% of 690 =
  26. 26.1% of 840 =
  27. 27.50% of 140 =
  28. 28.1% of 610 =
  29. 29.15% of 610 =
  30. 30.25% of 710 =
  31. 31.20% of 800 =
  32. 32.50% of 40 =
  33. 33.5% of 450 =
  34. 34.15% of 90 =
  35. 35.10% of 290 =
  36. 36.1% of 640 =
  37. 37.10% of 190 =
  38. 38.1% of 400 =
  39. 39.10% of 500 =
  40. 40.50% of 690 =

Answer key

  1. 158
  2. 64
  3. 28.5
  4. 51
  5. 2.8
  6. 235
  7. 129
  8. 125
  9. 73
  10. 170
  11. 5.3
  12. 82.5
  13. 66
  14. 35.5
  15. 77
  16. 245
  17. 123
  18. 53
  19. 177.5
  20. 76
  21. 24
  22. 152.5
  23. 255
  24. 27.5
  25. 6.9
  26. 8.4
  27. 70
  28. 6.1
  29. 91.5
  30. 177.5
  31. 160
  32. 20
  33. 22.5
  34. 13.5
  35. 29
  36. 6.4
  37. 19
  38. 4
  39. 50
  40. 345

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