Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 422 · 40 questions

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.

1. 1.7.6 × 2.4 — where does the decimal point go? (a) 182.4 (b) 18.24 (c) 1.824 (d) 0.1824
2. 2.5.3 × 6 — where does the decimal point go? (a) 0.318 (b) 318 (c) 3.18 (d) 31.8
3. 3.5.1 × 7 — where does the decimal point go? (a) 0.357 (b) 35.7 (c) 357 (d) 3.57
4. 4.2.9 × 34 — where does the decimal point go? (a) 9.86 (b) 98.6 (c) 0.986 (d) 986
5. 5.0.56 × 31 — where does the decimal point go? (a) 0.1736 (b) 17.36 (c) 1.736 (d) 173.6
6. 6.2.7 × 1.3 — where does the decimal point go? (a) 35.1 (b) 3.51 (c) 0.0351 (d) 0.351
7. 7.0.42 × 3 — where does the decimal point go? (a) 0.126 (b) 12.6 (c) 1.26 (d) 0.0126
8. 8.2.9 × 6 — where does the decimal point go? (a) 17.4 (b) 0.174 (c) 174 (d) 1.74
9. 9.8.3 × 0.2 — where does the decimal point go? (a) 0.166 (b) 16.6 (c) 0.0166 (d) 1.66
10. 10.0.36 × 44 — where does the decimal point go? (a) 1.584 (b) 158.4 (c) 15.84 (d) 0.1584
11. 11.0.31 × 3.6 — where does the decimal point go? (a) 11.16 (b) 0.01116 (c) 0.1116 (d) 1.116
12. 12.6.2 × 2 — where does the decimal point go? (a) 1.24 (b) 0.124 (c) 124 (d) 12.4
13. 13.1.3 × 5 — where does the decimal point go? (a) 6.5 (b) 0.65 (c) 65 (d) 0.065
14. 14.0.91 × 7 — where does the decimal point go? (a) 63.7 (b) 6.37 (c) 0.0637 (d) 0.637
15. 15.0.12 × 7 — where does the decimal point go? (a) 0.84 (b) 0.084 (c) 0.0084 (d) 8.4
16. 16.1.3 × 2 — where does the decimal point go? (a) 0.026 (b) 26 (c) 2.6 (d) 0.26
17. 17.0.58 × 0.8 — where does the decimal point go? (a) 0.464 (b) 0.0464 (c) 0.00464 (d) 4.64
18. 18.0.81 × 13 — where does the decimal point go? (a) 105.3 (b) 0.1053 (c) 1.053 (d) 10.53
19. 19.2.2 × 7 — where does the decimal point go? (a) 15.4 (b) 1.54 (c) 0.154 (d) 154
20. 20.0.63 × 1.2 — where does the decimal point go? (a) 0.756 (b) 7.56 (c) 0.0756 (d) 0.00756
21. 21.0.39 × 4.8 — where does the decimal point go? (a) 1.872 (b) 0.01872 (c) 18.72 (d) 0.1872
22. 22.2.3 × 0.6 — where does the decimal point go? (a) 0.0138 (b) 13.8 (c) 1.38 (d) 0.138
23. 23.0.39 × 3 — where does the decimal point go? (a) 1.17 (b) 0.117 (c) 11.7 (d) 0.0117
24. 24.0.53 × 8 — where does the decimal point go? (a) 42.4 (b) 4.24 (c) 0.424 (d) 0.0424
25. 25.0.72 × 9 — where does the decimal point go? (a) 6.48 (b) 0.0648 (c) 0.648 (d) 64.8
26. 26.0.41 × 2.9 — where does the decimal point go? (a) 0.01189 (b) 1.189 (c) 11.89 (d) 0.1189
27. 27.1.4 × 1.9 — where does the decimal point go? (a) 2.66 (b) 0.266 (c) 26.6 (d) 0.0266
28. 28.3.1 × 2 — where does the decimal point go? (a) 0.62 (b) 0.062 (c) 6.2 (d) 62
29. 29.6.4 × 7 — where does the decimal point go? (a) 4.48 (b) 44.8 (c) 448 (d) 0.448
30. 30.0.82 × 4.7 — where does the decimal point go? (a) 0.03854 (b) 3.854 (c) 0.3854 (d) 38.54
31. 31.0.36 × 1.3 — where does the decimal point go? (a) 0.468 (b) 0.00468 (c) 0.0468 (d) 4.68
32. 32.0.95 × 0.7 — where does the decimal point go? (a) 0.0665 (b) 0.00665 (c) 0.665 (d) 6.65
33. 33.5.3 × 0.2 — where does the decimal point go? (a) 1.06 (b) 0.0106 (c) 0.106 (d) 10.6
34. 34.6.9 × 1.4 — where does the decimal point go? (a) 9.66 (b) 0.966 (c) 96.6 (d) 0.0966
35. 35.7.7 × 3.9 — where does the decimal point go? (a) 0.3003 (b) 30.03 (c) 3.003 (d) 300.3
36. 36.3.1 × 4 — where does the decimal point go? (a) 0.124 (b) 12.4 (c) 1.24 (d) 124
37. 37.1.2 × 27 — where does the decimal point go? (a) 0.324 (b) 3.24 (c) 324 (d) 32.4
38. 38.0.99 × 0.3 — where does the decimal point go? (a) 0.0297 (b) 0.00297 (c) 0.297 (d) 2.97
39. 39.4.2 × 2.1 — where does the decimal point go? (a) 0.0882 (b) 88.2 (c) 0.882 (d) 8.82
40. 40.6.4 × 0.6 — where does the decimal point go? (a) 38.4 (b) 0.0384 (c) 0.384 (d) 3.84

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