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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 130 · 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 560 =
  2. 2.1% of 220 =
  3. 3.15% of 770 =
  4. 4.50% of 330 =
  5. 5.20% of 760 =
  6. 6.10% of 290 =
  7. 7.1% of 270 =
  8. 8.25% of 80 =
  9. 9.25% of 640 =
  10. 10.50% of 600 =
  11. 11.5% of 260 =
  12. 12.20% of 770 =
  13. 13.5% of 80 =
  14. 14.1% of 450 =
  15. 15.25% of 100 =
  16. 16.5% of 320 =
  17. 17.10% of 300 =
  18. 18.5% of 430 =
  19. 19.10% of 400 =
  20. 20.50% of 400 =
  21. 21.20% of 890 =
  22. 22.5% of 510 =
  23. 23.1% of 610 =
  24. 24.1% of 690 =
  25. 25.25% of 630 =
  26. 26.50% of 50 =
  27. 27.25% of 520 =
  28. 28.50% of 70 =
  29. 29.15% of 750 =
  30. 30.5% of 840 =
  31. 31.5% of 490 =
  32. 32.10% of 340 =
  33. 33.25% of 570 =
  34. 34.5% of 130 =
  35. 35.20% of 700 =
  36. 36.20% of 880 =
  37. 37.20% of 130 =
  38. 38.5% of 830 =
  39. 39.50% of 330 =
  40. 40.20% of 870 =

Answer key

  1. 84
  2. 2.2
  3. 115.5
  4. 165
  5. 152
  6. 29
  7. 2.7
  8. 20
  9. 160
  10. 300
  11. 13
  12. 154
  13. 4
  14. 4.5
  15. 25
  16. 16
  17. 30
  18. 21.5
  19. 40
  20. 200
  21. 178
  22. 25.5
  23. 6.1
  24. 6.9
  25. 157.5
  26. 25
  27. 130
  28. 35
  29. 112.5
  30. 42
  31. 24.5
  32. 34
  33. 142.5
  34. 6.5
  35. 140
  36. 176
  37. 26
  38. 41.5
  39. 165
  40. 174

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