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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 132 · 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. 1.50% of 130 =
  2. 2.20% of 590 =
  3. 3.5% of 380 =
  4. 4.10% of 130 =
  5. 5.15% of 890 =
  6. 6.1% of 140 =
  7. 7.5% of 30 =
  8. 8.15% of 310 =
  9. 9.15% of 280 =
  10. 10.50% of 30 =
  11. 11.50% of 110 =
  12. 12.50% of 360 =
  13. 13.15% of 490 =
  14. 14.10% of 560 =
  15. 15.20% of 690 =
  16. 16.20% of 430 =
  17. 17.15% of 570 =
  18. 18.10% of 720 =
  19. 19.10% of 170 =
  20. 20.50% of 400 =
  21. 21.1% of 630 =
  22. 22.1% of 290 =
  23. 23.25% of 150 =
  24. 24.15% of 570 =
  25. 25.25% of 880 =
  26. 26.10% of 80 =
  27. 27.5% of 370 =
  28. 28.15% of 590 =
  29. 29.1% of 700 =
  30. 30.25% of 680 =
  31. 31.15% of 460 =
  32. 32.1% of 730 =
  33. 33.15% of 680 =
  34. 34.25% of 420 =
  35. 35.10% of 200 =
  36. 36.50% of 60 =
  37. 37.20% of 700 =
  38. 38.5% of 420 =
  39. 39.50% of 320 =
  40. 40.20% of 870 =

Answer key

  1. 65
  2. 118
  3. 19
  4. 13
  5. 133.5
  6. 1.4
  7. 1.5
  8. 46.5
  9. 42
  10. 15
  11. 55
  12. 180
  13. 73.5
  14. 56
  15. 138
  16. 86
  17. 85.5
  18. 72
  19. 17
  20. 200
  21. 6.3
  22. 2.9
  23. 37.5
  24. 85.5
  25. 220
  26. 8
  27. 18.5
  28. 88.5
  29. 7
  30. 170
  31. 69
  32. 7.3
  33. 102
  34. 105
  35. 20
  36. 30
  37. 140
  38. 21
  39. 160
  40. 174

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