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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 173 · 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. 1.15% of 840 =
  2. 2.20% of 230 =
  3. 3.10% of 70 =
  4. 4.5% of 70 =
  5. 5.20% of 880 =
  6. 6.25% of 620 =
  7. 7.20% of 30 =
  8. 8.50% of 720 =
  9. 9.20% of 190 =
  10. 10.50% of 540 =
  11. 11.10% of 350 =
  12. 12.15% of 490 =
  13. 13.5% of 420 =
  14. 14.5% of 160 =
  15. 15.25% of 420 =
  16. 16.10% of 550 =
  17. 17.15% of 830 =
  18. 18.50% of 440 =
  19. 19.25% of 840 =
  20. 20.1% of 630 =
  21. 21.25% of 280 =
  22. 22.25% of 380 =
  23. 23.10% of 130 =
  24. 24.50% of 200 =
  25. 25.5% of 160 =
  26. 26.20% of 100 =
  27. 27.1% of 140 =
  28. 28.15% of 360 =
  29. 29.15% of 790 =
  30. 30.50% of 770 =
  31. 31.10% of 100 =
  32. 32.25% of 310 =
  33. 33.25% of 860 =
  34. 34.5% of 90 =
  35. 35.5% of 900 =
  36. 36.10% of 830 =
  37. 37.5% of 740 =
  38. 38.20% of 200 =
  39. 39.25% of 180 =
  40. 40.1% of 270 =

Answer key

  1. 126
  2. 46
  3. 7
  4. 3.5
  5. 176
  6. 155
  7. 6
  8. 360
  9. 38
  10. 270
  11. 35
  12. 73.5
  13. 21
  14. 8
  15. 105
  16. 55
  17. 124.5
  18. 220
  19. 210
  20. 6.3
  21. 70
  22. 95
  23. 13
  24. 100
  25. 8
  26. 20
  27. 1.4
  28. 54
  29. 118.5
  30. 385
  31. 10
  32. 77.5
  33. 215
  34. 4.5
  35. 45
  36. 83
  37. 37
  38. 40
  39. 45
  40. 2.7

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