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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 763 · 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 840 =
  2. 2.1% of 180 =
  3. 3.5% of 810 =
  4. 4.20% of 110 =
  5. 5.5% of 740 =
  6. 6.5% of 30 =
  7. 7.1% of 860 =
  8. 8.50% of 860 =
  9. 9.50% of 840 =
  10. 10.1% of 360 =
  11. 11.50% of 560 =
  12. 12.25% of 700 =
  13. 13.50% of 500 =
  14. 14.5% of 100 =
  15. 15.10% of 410 =
  16. 16.5% of 230 =
  17. 17.15% of 310 =
  18. 18.10% of 750 =
  19. 19.5% of 510 =
  20. 20.5% of 690 =
  21. 21.10% of 320 =
  22. 22.10% of 30 =
  23. 23.15% of 370 =
  24. 24.20% of 850 =
  25. 25.25% of 590 =
  26. 26.10% of 360 =
  27. 27.5% of 30 =
  28. 28.50% of 680 =
  29. 29.1% of 140 =
  30. 30.5% of 310 =
  31. 31.15% of 420 =
  32. 32.5% of 760 =
  33. 33.20% of 670 =
  34. 34.20% of 360 =
  35. 35.25% of 860 =
  36. 36.5% of 550 =
  37. 37.1% of 150 =
  38. 38.50% of 720 =
  39. 39.1% of 590 =
  40. 40.10% of 100 =

Answer key

  1. 168
  2. 1.8
  3. 40.5
  4. 22
  5. 37
  6. 1.5
  7. 8.6
  8. 430
  9. 420
  10. 3.6
  11. 280
  12. 175
  13. 250
  14. 5
  15. 41
  16. 11.5
  17. 46.5
  18. 75
  19. 25.5
  20. 34.5
  21. 32
  22. 3
  23. 55.5
  24. 170
  25. 147.5
  26. 36
  27. 1.5
  28. 340
  29. 1.4
  30. 15.5
  31. 63
  32. 38
  33. 134
  34. 72
  35. 215
  36. 27.5
  37. 1.5
  38. 360
  39. 5.9
  40. 10

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