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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 259 · 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. 1.2.4 × 31 — where does the decimal point go? (a) 74.4 (b) 0.744 (c) 744 (d) 7.44
  2. 2.0.59 × 6 — where does the decimal point go? (a) 3.54 (b) 0.0354 (c) 0.354 (d) 35.4
  3. 3.0.95 × 0.5 — where does the decimal point go? (a) 0.0475 (b) 0.475 (c) 0.00475 (d) 4.75
  4. 4.4.3 × 0.2 — where does the decimal point go? (a) 0.0086 (b) 8.6 (c) 0.086 (d) 0.86
  5. 5.4.2 × 0.2 — where does the decimal point go? (a) 0.084 (b) 0.84 (c) 8.4 (d) 0.0084
  6. 6.2.2 × 0.4 — where does the decimal point go? (a) 0.088 (b) 0.0088 (c) 8.8 (d) 0.88
  7. 7.9.7 × 0.3 — where does the decimal point go? (a) 0.0291 (b) 2.91 (c) 0.291 (d) 29.1
  8. 8.0.28 × 4.3 — where does the decimal point go? (a) 0.1204 (b) 1.204 (c) 12.04 (d) 0.01204
  9. 9.0.17 × 18 — where does the decimal point go? (a) 30.6 (b) 3.06 (c) 0.0306 (d) 0.306
  10. 10.0.48 × 2 — where does the decimal point go? (a) 0.096 (b) 0.0096 (c) 9.6 (d) 0.96
  11. 11.0.44 × 8 — where does the decimal point go? (a) 3.52 (b) 35.2 (c) 0.352 (d) 0.0352
  12. 12.0.34 × 3.7 — where does the decimal point go? (a) 1.258 (b) 12.58 (c) 0.1258 (d) 0.01258
  13. 13.6.3 × 0.8 — where does the decimal point go? (a) 0.504 (b) 50.4 (c) 5.04 (d) 0.0504
  14. 14.8.9 × 13 — where does the decimal point go? (a) 1.157 (b) 115.7 (c) 11.57 (d) 1157
  15. 15.0.79 × 0.9 — where does the decimal point go? (a) 7.11 (b) 0.711 (c) 0.0711 (d) 0.00711
  16. 16.1.2 × 2 — where does the decimal point go? (a) 0.024 (b) 2.4 (c) 24 (d) 0.24
  17. 17.0.57 × 27 — where does the decimal point go? (a) 153.9 (b) 15.39 (c) 1.539 (d) 0.1539
  18. 18.0.73 × 0.7 — where does the decimal point go? (a) 0.00511 (b) 5.11 (c) 0.0511 (d) 0.511
  19. 19.0.41 × 0.8 — where does the decimal point go? (a) 0.00328 (b) 3.28 (c) 0.328 (d) 0.0328
  20. 20.9.8 × 23 — where does the decimal point go? (a) 2.254 (b) 22.54 (c) 2254 (d) 225.4
  21. 21.0.98 × 0.3 — where does the decimal point go? (a) 0.00294 (b) 0.0294 (c) 2.94 (d) 0.294
  22. 22.4.3 × 0.8 — where does the decimal point go? (a) 0.0344 (b) 0.344 (c) 34.4 (d) 3.44
  23. 23.5.4 × 3 — where does the decimal point go? (a) 1.62 (b) 0.162 (c) 16.2 (d) 162
  24. 24.2.5 × 33 — where does the decimal point go? (a) 8.25 (b) 0.825 (c) 825 (d) 82.5
  25. 25.0.85 × 9 — where does the decimal point go? (a) 76.5 (b) 7.65 (c) 0.0765 (d) 0.765
  26. 26.3.5 × 9 — where does the decimal point go? (a) 315 (b) 31.5 (c) 0.315 (d) 3.15
  27. 27.0.35 × 5 — where does the decimal point go? (a) 17.5 (b) 0.0175 (c) 0.175 (d) 1.75
  28. 28.4.3 × 7 — where does the decimal point go? (a) 3.01 (b) 301 (c) 0.301 (d) 30.1
  29. 29.6.8 × 1.9 — where does the decimal point go? (a) 129.2 (b) 12.92 (c) 1.292 (d) 0.1292
  30. 30.0.85 × 7 — where does the decimal point go? (a) 0.0595 (b) 59.5 (c) 0.595 (d) 5.95
  31. 31.4.4 × 3 — where does the decimal point go? (a) 13.2 (b) 132 (c) 0.132 (d) 1.32
  32. 32.0.61 × 12 — where does the decimal point go? (a) 0.0732 (b) 73.2 (c) 0.732 (d) 7.32
  33. 33.0.87 × 6 — where does the decimal point go? (a) 0.0522 (b) 0.522 (c) 52.2 (d) 5.22
  34. 34.3.1 × 32 — where does the decimal point go? (a) 0.992 (b) 992 (c) 9.92 (d) 99.2
  35. 35.0.92 × 0.3 — where does the decimal point go? (a) 0.276 (b) 0.0276 (c) 0.00276 (d) 2.76
  36. 36.8.7 × 0.2 — where does the decimal point go? (a) 1.74 (b) 17.4 (c) 0.174 (d) 0.0174
  37. 37.5.9 × 9 — where does the decimal point go? (a) 531 (b) 53.1 (c) 0.531 (d) 5.31
  38. 38.4.3 × 6 — where does the decimal point go? (a) 0.258 (b) 2.58 (c) 25.8 (d) 258
  39. 39.7.5 × 7 — where does the decimal point go? (a) 5.25 (b) 52.5 (c) 0.525 (d) 525
  40. 40.4.9 × 2.7 — where does the decimal point go? (a) 132.3 (b) 13.23 (c) 0.1323 (d) 1.323

Answer key

  1. 74.4
  2. 3.54
  3. 0.475
  4. 0.86
  5. 0.84
  6. 0.88
  7. 2.91
  8. 1.204
  9. 3.06
  10. 0.96
  11. 3.52
  12. 1.258
  13. 5.04
  14. 115.7
  15. 0.711
  16. 2.4
  17. 15.39
  18. 0.511
  19. 0.328
  20. 225.4
  21. 0.294
  22. 3.44
  23. 16.2
  24. 82.5
  25. 7.65
  26. 31.5
  27. 1.75
  28. 30.1
  29. 12.92
  30. 5.95
  31. 13.2
  32. 7.32
  33. 5.22
  34. 99.2
  35. 0.276
  36. 1.74
  37. 53.1
  38. 25.8
  39. 52.5
  40. 13.23

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