← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 397 · 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 840 =
  2. 2.10% of 610 =
  3. 3.5% of 670 =
  4. 4.10% of 640 =
  5. 5.25% of 140 =
  6. 6.10% of 360 =
  7. 7.1% of 840 =
  8. 8.20% of 670 =
  9. 9.25% of 860 =
  10. 10.5% of 460 =
  11. 11.25% of 450 =
  12. 12.5% of 380 =
  13. 13.25% of 540 =
  14. 14.1% of 840 =
  15. 15.1% of 510 =
  16. 16.25% of 750 =
  17. 17.10% of 240 =
  18. 18.1% of 650 =
  19. 19.15% of 190 =
  20. 20.50% of 760 =
  21. 21.10% of 510 =
  22. 22.10% of 620 =
  23. 23.50% of 300 =
  24. 24.5% of 220 =
  25. 25.10% of 410 =
  26. 26.1% of 880 =
  27. 27.10% of 410 =
  28. 28.10% of 730 =
  29. 29.50% of 860 =
  30. 30.20% of 610 =
  31. 31.15% of 420 =
  32. 32.10% of 140 =
  33. 33.50% of 650 =
  34. 34.50% of 110 =
  35. 35.10% of 460 =
  36. 36.5% of 700 =
  37. 37.15% of 300 =
  38. 38.50% of 620 =
  39. 39.5% of 490 =
  40. 40.5% of 300 =

Answer key

  1. 210
  2. 61
  3. 33.5
  4. 64
  5. 35
  6. 36
  7. 8.4
  8. 134
  9. 215
  10. 23
  11. 112.5
  12. 19
  13. 135
  14. 8.4
  15. 5.1
  16. 187.5
  17. 24
  18. 6.5
  19. 28.5
  20. 380
  21. 51
  22. 62
  23. 150
  24. 11
  25. 41
  26. 8.8
  27. 41
  28. 73
  29. 430
  30. 122
  31. 63
  32. 14
  33. 325
  34. 55
  35. 46
  36. 35
  37. 45
  38. 310
  39. 24.5
  40. 15

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