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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 748 · 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. 1.1% of 130 =
  2. 2.20% of 810 =
  3. 3.10% of 140 =
  4. 4.1% of 560 =
  5. 5.20% of 290 =
  6. 6.1% of 40 =
  7. 7.50% of 440 =
  8. 8.50% of 760 =
  9. 9.1% of 140 =
  10. 10.50% of 290 =
  11. 11.5% of 800 =
  12. 12.10% of 580 =
  13. 13.15% of 150 =
  14. 14.20% of 570 =
  15. 15.15% of 170 =
  16. 16.5% of 690 =
  17. 17.25% of 750 =
  18. 18.25% of 420 =
  19. 19.25% of 190 =
  20. 20.50% of 710 =
  21. 21.5% of 450 =
  22. 22.20% of 100 =
  23. 23.25% of 480 =
  24. 24.25% of 640 =
  25. 25.1% of 210 =
  26. 26.50% of 150 =
  27. 27.5% of 20 =
  28. 28.15% of 420 =
  29. 29.25% of 540 =
  30. 30.1% of 720 =
  31. 31.5% of 620 =
  32. 32.10% of 590 =
  33. 33.20% of 390 =
  34. 34.50% of 760 =
  35. 35.50% of 570 =
  36. 36.5% of 570 =
  37. 37.20% of 360 =
  38. 38.20% of 680 =
  39. 39.5% of 490 =
  40. 40.15% of 260 =

Answer key

  1. 1.3
  2. 162
  3. 14
  4. 5.6
  5. 58
  6. 0.4
  7. 220
  8. 380
  9. 1.4
  10. 145
  11. 40
  12. 58
  13. 22.5
  14. 114
  15. 25.5
  16. 34.5
  17. 187.5
  18. 105
  19. 47.5
  20. 355
  21. 22.5
  22. 20
  23. 120
  24. 160
  25. 2.1
  26. 75
  27. 1
  28. 63
  29. 135
  30. 7.2
  31. 31
  32. 59
  33. 78
  34. 380
  35. 285
  36. 28.5
  37. 72
  38. 136
  39. 24.5
  40. 39

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