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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 257 · 40 questions
TalentJR

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

NameDateTime takenScore ___ / 40
  1. 1.0.26 × 0.7 — where does the decimal point go? (a) 0.0182 (b) 0.182 (c) 1.82 (d) 0.00182
  2. 2.0.53 × 3.8 — where does the decimal point go? (a) 2.014 (b) 0.02014 (c) 0.2014 (d) 20.14
  3. 3.7.6 × 9 — where does the decimal point go? (a) 0.684 (b) 68.4 (c) 6.84 (d) 684
  4. 4.0.29 × 9 — where does the decimal point go? (a) 0.261 (b) 0.0261 (c) 2.61 (d) 26.1
  5. 5.3.8 × 12 — where does the decimal point go? (a) 45.6 (b) 4.56 (c) 456 (d) 0.456
  6. 6.0.27 × 7 — where does the decimal point go? (a) 18.9 (b) 0.189 (c) 0.0189 (d) 1.89
  7. 7.7.7 × 3.2 — where does the decimal point go? (a) 2.464 (b) 246.4 (c) 24.64 (d) 0.2464
  8. 8.5.5 × 3 — where does the decimal point go? (a) 0.165 (b) 16.5 (c) 165 (d) 1.65
  9. 9.0.56 × 0.8 — where does the decimal point go? (a) 0.0448 (b) 0.00448 (c) 4.48 (d) 0.448
  10. 10.0.82 × 2.8 — where does the decimal point go? (a) 0.2296 (b) 0.02296 (c) 2.296 (d) 22.96
  11. 11.0.72 × 0.4 — where does the decimal point go? (a) 2.88 (b) 0.288 (c) 0.0288 (d) 0.00288
  12. 12.0.24 × 12 — where does the decimal point go? (a) 28.8 (b) 2.88 (c) 0.288 (d) 0.0288
  13. 13.3.2 × 0.7 — where does the decimal point go? (a) 0.0224 (b) 22.4 (c) 0.224 (d) 2.24
  14. 14.4.4 × 0.8 — where does the decimal point go? (a) 0.352 (b) 3.52 (c) 35.2 (d) 0.0352
  15. 15.9.8 × 2 — where does the decimal point go? (a) 196 (b) 19.6 (c) 1.96 (d) 0.196
  16. 16.0.12 × 8 — where does the decimal point go? (a) 0.0096 (b) 9.6 (c) 0.96 (d) 0.096
  17. 17.9.3 × 1.2 — where does the decimal point go? (a) 111.6 (b) 0.1116 (c) 11.16 (d) 1.116
  18. 18.0.23 × 3 — where does the decimal point go? (a) 6.9 (b) 0.069 (c) 0.69 (d) 0.0069
  19. 19.0.87 × 19 — where does the decimal point go? (a) 1.653 (b) 0.1653 (c) 16.53 (d) 165.3
  20. 20.1.8 × 39 — where does the decimal point go? (a) 702 (b) 7.02 (c) 0.702 (d) 70.2
  21. 21.0.27 × 15 — where does the decimal point go? (a) 4.05 (b) 0.405 (c) 0.0405 (d) 40.5
  22. 22.2.6 × 17 — where does the decimal point go? (a) 44.2 (b) 442 (c) 4.42 (d) 0.442
  23. 23.9.1 × 5 — where does the decimal point go? (a) 0.455 (b) 45.5 (c) 455 (d) 4.55
  24. 24.0.26 × 49 — where does the decimal point go? (a) 127.4 (b) 0.1274 (c) 1.274 (d) 12.74
  25. 25.5.2 × 2.3 — where does the decimal point go? (a) 0.1196 (b) 1.196 (c) 119.6 (d) 11.96
  26. 26.9.8 × 0.3 — where does the decimal point go? (a) 0.294 (b) 29.4 (c) 0.0294 (d) 2.94
  27. 27.6.3 × 2 — where does the decimal point go? (a) 0.126 (b) 126 (c) 1.26 (d) 12.6
  28. 28.4.8 × 0.9 — where does the decimal point go? (a) 0.432 (b) 0.0432 (c) 43.2 (d) 4.32
  29. 29.0.74 × 0.8 — where does the decimal point go? (a) 0.00592 (b) 0.0592 (c) 0.592 (d) 5.92
  30. 30.2.9 × 7 — where does the decimal point go? (a) 0.203 (b) 2.03 (c) 203 (d) 20.3
  31. 31.0.87 × 0.3 — where does the decimal point go? (a) 0.0261 (b) 0.261 (c) 0.00261 (d) 2.61
  32. 32.6.3 × 3.2 — where does the decimal point go? (a) 0.2016 (b) 201.6 (c) 20.16 (d) 2.016
  33. 33.0.37 × 1.8 — where does the decimal point go? (a) 0.0666 (b) 0.666 (c) 6.66 (d) 0.00666
  34. 34.1.7 × 28 — where does the decimal point go? (a) 0.476 (b) 476 (c) 4.76 (d) 47.6
  35. 35.0.76 × 2 — where does the decimal point go? (a) 0.152 (b) 0.0152 (c) 15.2 (d) 1.52
  36. 36.0.48 × 19 — where does the decimal point go? (a) 0.912 (b) 9.12 (c) 91.2 (d) 0.0912
  37. 37.8.9 × 2.8 — where does the decimal point go? (a) 249.2 (b) 24.92 (c) 2.492 (d) 0.2492
  38. 38.2.9 × 8 — where does the decimal point go? (a) 23.2 (b) 0.232 (c) 232 (d) 2.32
  39. 39.0.89 × 0.4 — where does the decimal point go? (a) 0.356 (b) 0.0356 (c) 0.00356 (d) 3.56
  40. 40.0.56 × 6 — where does the decimal point go? (a) 0.336 (b) 3.36 (c) 33.6 (d) 0.0336

Answer key

  1. 0.182
  2. 2.014
  3. 68.4
  4. 2.61
  5. 45.6
  6. 1.89
  7. 24.64
  8. 16.5
  9. 0.448
  10. 2.296
  11. 0.288
  12. 2.88
  13. 2.24
  14. 3.52
  15. 19.6
  16. 0.96
  17. 11.16
  18. 0.69
  19. 16.53
  20. 70.2
  21. 4.05
  22. 44.2
  23. 45.5
  24. 12.74
  25. 11.96
  26. 2.94
  27. 12.6
  28. 4.32
  29. 0.592
  30. 20.3
  31. 0.261
  32. 20.16
  33. 0.666
  34. 47.6
  35. 1.52
  36. 9.12
  37. 24.92
  38. 23.2
  39. 0.356
  40. 3.36

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