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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 584 · 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. 1.0.63 × 12 — where does the decimal point go? (a) 7.56 (b) 75.6 (c) 0.756 (d) 0.0756
  2. 2.0.39 × 26 — where does the decimal point go? (a) 1.014 (b) 101.4 (c) 0.1014 (d) 10.14
  3. 3.4.6 × 4 — where does the decimal point go? (a) 0.184 (b) 1.84 (c) 184 (d) 18.4
  4. 4.7.6 × 4.8 — where does the decimal point go? (a) 36.48 (b) 0.3648 (c) 3.648 (d) 364.8
  5. 5.0.68 × 4.4 — where does the decimal point go? (a) 2.992 (b) 29.92 (c) 0.2992 (d) 0.02992
  6. 6.1.2 × 0.4 — where does the decimal point go? (a) 0.48 (b) 0.0048 (c) 0.048 (d) 4.8
  7. 7.0.79 × 6 — where does the decimal point go? (a) 0.0474 (b) 4.74 (c) 0.474 (d) 47.4
  8. 8.7.7 × 0.4 — where does the decimal point go? (a) 3.08 (b) 0.0308 (c) 0.308 (d) 30.8
  9. 9.5.9 × 0.9 — where does the decimal point go? (a) 53.1 (b) 0.0531 (c) 5.31 (d) 0.531
  10. 10.8.5 × 5 — where does the decimal point go? (a) 42.5 (b) 0.425 (c) 4.25 (d) 425
  11. 11.0.96 × 36 — where does the decimal point go? (a) 345.6 (b) 34.56 (c) 0.3456 (d) 3.456
  12. 12.8.3 × 43 — where does the decimal point go? (a) 3.569 (b) 3569 (c) 35.69 (d) 356.9
  13. 13.0.51 × 1.2 — where does the decimal point go? (a) 0.612 (b) 0.00612 (c) 0.0612 (d) 6.12
  14. 14.7.1 × 26 — where does the decimal point go? (a) 18.46 (b) 1846 (c) 1.846 (d) 184.6
  15. 15.0.73 × 8 — where does the decimal point go? (a) 5.84 (b) 58.4 (c) 0.584 (d) 0.0584
  16. 16.9.4 × 24 — where does the decimal point go? (a) 2256 (b) 22.56 (c) 225.6 (d) 2.256
  17. 17.0.87 × 3 — where does the decimal point go? (a) 0.261 (b) 0.0261 (c) 2.61 (d) 26.1
  18. 18.0.19 × 19 — where does the decimal point go? (a) 36.1 (b) 0.361 (c) 3.61 (d) 0.0361
  19. 19.0.25 × 0.7 — where does the decimal point go? (a) 0.0175 (b) 0.175 (c) 0.00175 (d) 1.75
  20. 20.0.12 × 0.9 — where does the decimal point go? (a) 0.0108 (b) 1.08 (c) 0.108 (d) 0.00108
  21. 21.5.2 × 8 — where does the decimal point go? (a) 41.6 (b) 0.416 (c) 4.16 (d) 416
  22. 22.0.19 × 2.1 — where does the decimal point go? (a) 0.00399 (b) 0.399 (c) 0.0399 (d) 3.99
  23. 23.0.99 × 3.1 — where does the decimal point go? (a) 0.3069 (b) 0.03069 (c) 30.69 (d) 3.069
  24. 24.0.87 × 27 — where does the decimal point go? (a) 23.49 (b) 0.2349 (c) 2.349 (d) 234.9
  25. 25.0.24 × 3 — where does the decimal point go? (a) 7.2 (b) 0.072 (c) 0.72 (d) 0.0072
  26. 26.0.41 × 1.9 — where does the decimal point go? (a) 0.0779 (b) 0.779 (c) 7.79 (d) 0.00779
  27. 27.1.4 × 7 — where does the decimal point go? (a) 0.98 (b) 0.098 (c) 98 (d) 9.8
  28. 28.0.38 × 17 — where does the decimal point go? (a) 64.6 (b) 0.0646 (c) 6.46 (d) 0.646
  29. 29.1.8 × 0.7 — where does the decimal point go? (a) 1.26 (b) 12.6 (c) 0.126 (d) 0.0126
  30. 30.3.5 × 5 — where does the decimal point go? (a) 1.75 (b) 17.5 (c) 175 (d) 0.175
  31. 31.1.4 × 11 — where does the decimal point go? (a) 1.54 (b) 0.154 (c) 15.4 (d) 154
  32. 32.2.9 × 16 — where does the decimal point go? (a) 46.4 (b) 4.64 (c) 0.464 (d) 464
  33. 33.0.69 × 0.6 — where does the decimal point go? (a) 0.0414 (b) 0.00414 (c) 0.414 (d) 4.14
  34. 34.0.21 × 15 — where does the decimal point go? (a) 3.15 (b) 0.315 (c) 0.0315 (d) 31.5
  35. 35.0.41 × 0.7 — where does the decimal point go? (a) 2.87 (b) 0.0287 (c) 0.287 (d) 0.00287
  36. 36.4.6 × 8 — where does the decimal point go? (a) 3.68 (b) 0.368 (c) 36.8 (d) 368
  37. 37.0.66 × 0.4 — where does the decimal point go? (a) 0.264 (b) 0.00264 (c) 0.0264 (d) 2.64
  38. 38.7.8 × 4.1 — where does the decimal point go? (a) 31.98 (b) 0.3198 (c) 3.198 (d) 319.8
  39. 39.0.72 × 43 — where does the decimal point go? (a) 309.6 (b) 30.96 (c) 0.3096 (d) 3.096
  40. 40.1.8 × 17 — where does the decimal point go? (a) 306 (b) 3.06 (c) 0.306 (d) 30.6

Answer key

  1. 7.56
  2. 10.14
  3. 18.4
  4. 36.48
  5. 2.992
  6. 0.48
  7. 4.74
  8. 3.08
  9. 5.31
  10. 42.5
  11. 34.56
  12. 356.9
  13. 0.612
  14. 184.6
  15. 5.84
  16. 225.6
  17. 2.61
  18. 3.61
  19. 0.175
  20. 0.108
  21. 41.6
  22. 0.399
  23. 3.069
  24. 23.49
  25. 0.72
  26. 0.779
  27. 9.8
  28. 6.46
  29. 1.26
  30. 17.5
  31. 15.4
  32. 46.4
  33. 0.414
  34. 3.15
  35. 0.287
  36. 36.8
  37. 0.264
  38. 31.98
  39. 30.96
  40. 30.6

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