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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 722 · 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. 1.10% of 370 =
  2. 2.10% of 200 =
  3. 3.25% of 130 =
  4. 4.50% of 860 =
  5. 5.25% of 560 =
  6. 6.25% of 220 =
  7. 7.15% of 210 =
  8. 8.1% of 20 =
  9. 9.25% of 380 =
  10. 10.10% of 110 =
  11. 11.25% of 850 =
  12. 12.20% of 210 =
  13. 13.50% of 180 =
  14. 14.25% of 750 =
  15. 15.20% of 30 =
  16. 16.1% of 790 =
  17. 17.1% of 100 =
  18. 18.10% of 240 =
  19. 19.20% of 640 =
  20. 20.50% of 370 =
  21. 21.5% of 620 =
  22. 22.25% of 440 =
  23. 23.10% of 120 =
  24. 24.20% of 170 =
  25. 25.25% of 30 =
  26. 26.50% of 150 =
  27. 27.15% of 510 =
  28. 28.1% of 50 =
  29. 29.50% of 220 =
  30. 30.5% of 640 =
  31. 31.10% of 240 =
  32. 32.5% of 360 =
  33. 33.25% of 240 =
  34. 34.15% of 280 =
  35. 35.50% of 390 =
  36. 36.5% of 810 =
  37. 37.50% of 650 =
  38. 38.20% of 420 =
  39. 39.10% of 620 =
  40. 40.15% of 860 =

Answer key

  1. 37
  2. 20
  3. 32.5
  4. 430
  5. 140
  6. 55
  7. 31.5
  8. 0.2
  9. 95
  10. 11
  11. 212.5
  12. 42
  13. 90
  14. 187.5
  15. 6
  16. 7.9
  17. 1
  18. 24
  19. 128
  20. 185
  21. 31
  22. 110
  23. 12
  24. 34
  25. 7.5
  26. 75
  27. 76.5
  28. 0.5
  29. 110
  30. 32
  31. 24
  32. 18
  33. 60
  34. 42
  35. 195
  36. 40.5
  37. 325
  38. 84
  39. 62
  40. 129

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