Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 721 · 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. 1.1.6 × 3.2 — where does the decimal point go? (a) 5.12 (b) 0.0512 (c) 0.512 (d) 51.2
2. 2.7.7 × 14 — where does the decimal point go? (a) 1078 (b) 1.078 (c) 107.8 (d) 10.78
3. 3.0.33 × 3.5 — where does the decimal point go? (a) 0.1155 (b) 11.55 (c) 0.01155 (d) 1.155
4. 4.4.1 × 0.5 — where does the decimal point go? (a) 0.205 (b) 2.05 (c) 0.0205 (d) 20.5
5. 5.2.6 × 22 — where does the decimal point go? (a) 57.2 (b) 5.72 (c) 572 (d) 0.572
6. 6.0.81 × 7 — where does the decimal point go? (a) 5.67 (b) 56.7 (c) 0.0567 (d) 0.567
7. 7.7.9 × 19 — where does the decimal point go? (a) 15.01 (b) 1501 (c) 1.501 (d) 150.1
8. 8.7.6 × 23 — where does the decimal point go? (a) 1.748 (b) 174.8 (c) 17.48 (d) 1748
9. 9.2.2 × 7 — where does the decimal point go? (a) 0.154 (b) 154 (c) 15.4 (d) 1.54
10. 10.0.82 × 32 — where does the decimal point go? (a) 2.624 (b) 0.2624 (c) 26.24 (d) 262.4
11. 11.0.24 × 38 — where does the decimal point go? (a) 0.0912 (b) 91.2 (c) 9.12 (d) 0.912
12. 12.0.54 × 2.4 — where does the decimal point go? (a) 0.01296 (b) 12.96 (c) 0.1296 (d) 1.296
13. 13.0.29 × 0.4 — where does the decimal point go? (a) 1.16 (b) 0.0116 (c) 0.116 (d) 0.00116
14. 14.0.27 × 4.2 — where does the decimal point go? (a) 0.01134 (b) 0.1134 (c) 1.134 (d) 11.34
15. 15.5.7 × 3.2 — where does the decimal point go? (a) 1.824 (b) 0.1824 (c) 18.24 (d) 182.4
16. 16.9.3 × 0.3 — where does the decimal point go? (a) 2.79 (b) 27.9 (c) 0.0279 (d) 0.279
17. 17.0.33 × 2 — where does the decimal point go? (a) 0.0066 (b) 6.6 (c) 0.066 (d) 0.66
18. 18.0.36 × 3.2 — where does the decimal point go? (a) 1.152 (b) 0.1152 (c) 0.01152 (d) 11.52
19. 19.0.87 × 4 — where does the decimal point go? (a) 0.348 (b) 3.48 (c) 0.0348 (d) 34.8
20. 20.0.44 × 18 — where does the decimal point go? (a) 79.2 (b) 0.792 (c) 7.92 (d) 0.0792
21. 21.3.8 × 13 — where does the decimal point go? (a) 49.4 (b) 4.94 (c) 0.494 (d) 494
22. 22.0.52 × 39 — where does the decimal point go? (a) 2.028 (b) 0.2028 (c) 20.28 (d) 202.8
23. 23.0.71 × 0.5 — where does the decimal point go? (a) 0.0355 (b) 3.55 (c) 0.00355 (d) 0.355
24. 24.0.18 × 42 — where does the decimal point go? (a) 7.56 (b) 0.0756 (c) 75.6 (d) 0.756
25. 25.6.7 × 3 — where does the decimal point go? (a) 2.01 (b) 20.1 (c) 0.201 (d) 201
26. 26.5.8 × 0.3 — where does the decimal point go? (a) 1.74 (b) 0.174 (c) 0.0174 (d) 17.4
27. 27.0.93 × 11 — where does the decimal point go? (a) 102.3 (b) 10.23 (c) 0.1023 (d) 1.023
28. 28.9.7 × 2.6 — where does the decimal point go? (a) 25.22 (b) 0.2522 (c) 2.522 (d) 252.2
29. 29.0.89 × 3.3 — where does the decimal point go? (a) 29.37 (b) 2.937 (c) 0.02937 (d) 0.2937
30. 30.0.79 × 15 — where does the decimal point go? (a) 1.185 (b) 118.5 (c) 0.1185 (d) 11.85
31. 31.3.7 × 2 — where does the decimal point go? (a) 0.074 (b) 7.4 (c) 0.74 (d) 74
32. 32.1.6 × 0.7 — where does the decimal point go? (a) 0.0112 (b) 1.12 (c) 0.112 (d) 11.2
33. 33.1.4 × 24 — where does the decimal point go? (a) 0.336 (b) 3.36 (c) 33.6 (d) 336
34. 34.0.71 × 47 — where does the decimal point go? (a) 33.37 (b) 3.337 (c) 333.7 (d) 0.3337
35. 35.4.8 × 0.2 — where does the decimal point go? (a) 0.96 (b) 0.096 (c) 9.6 (d) 0.0096
36. 36.6.9 × 4.3 — where does the decimal point go? (a) 2.967 (b) 29.67 (c) 0.2967 (d) 296.7
37. 37.0.93 × 13 — where does the decimal point go? (a) 120.9 (b) 1.209 (c) 0.1209 (d) 12.09
38. 38.0.21 × 0.5 — where does the decimal point go? (a) 0.00105 (b) 0.0105 (c) 0.105 (d) 1.05
39. 39.0.31 × 2 — where does the decimal point go? (a) 0.62 (b) 0.0062 (c) 0.062 (d) 6.2
40. 40.0.63 × 2.9 — where does the decimal point go? (a) 1.827 (b) 0.01827 (c) 0.1827 (d) 18.27

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