Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 556 · 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. 1.1.2 × 9 — where does the decimal point go? (a) 1.08 (b) 0.108 (c) 108 (d) 10.8
2. 2.2.8 × 32 — where does the decimal point go? (a) 8.96 (b) 0.896 (c) 896 (d) 89.6
3. 3.4.3 × 29 — where does the decimal point go? (a) 1.247 (b) 12.47 (c) 1247 (d) 124.7
4. 4.7.6 × 34 — where does the decimal point go? (a) 2.584 (b) 258.4 (c) 25.84 (d) 2584
5. 5.0.23 × 5 — where does the decimal point go? (a) 0.115 (b) 11.5 (c) 1.15 (d) 0.0115
6. 6.0.48 × 0.4 — where does the decimal point go? (a) 1.92 (b) 0.192 (c) 0.00192 (d) 0.0192
7. 7.7.3 × 0.7 — where does the decimal point go? (a) 51.1 (b) 0.511 (c) 5.11 (d) 0.0511
8. 8.4.4 × 0.7 — where does the decimal point go? (a) 30.8 (b) 0.0308 (c) 0.308 (d) 3.08
9. 9.8.8 × 46 — where does the decimal point go? (a) 40.48 (b) 4048 (c) 404.8 (d) 4.048
10. 10.0.31 × 0.2 — where does the decimal point go? (a) 0.062 (b) 0.00062 (c) 0.62 (d) 0.0062
11. 11.8.6 × 4 — where does the decimal point go? (a) 34.4 (b) 344 (c) 3.44 (d) 0.344
12. 12.5.6 × 3.3 — where does the decimal point go? (a) 184.8 (b) 0.1848 (c) 1.848 (d) 18.48
13. 13.0.26 × 3 — where does the decimal point go? (a) 0.078 (b) 0.78 (c) 7.8 (d) 0.0078
14. 14.0.51 × 2.5 — where does the decimal point go? (a) 0.1275 (b) 0.01275 (c) 1.275 (d) 12.75
15. 15.5.8 × 1.3 — where does the decimal point go? (a) 0.0754 (b) 7.54 (c) 75.4 (d) 0.754
16. 16.0.19 × 4 — where does the decimal point go? (a) 0.0076 (b) 7.6 (c) 0.076 (d) 0.76
17. 17.8.4 × 0.2 — where does the decimal point go? (a) 16.8 (b) 1.68 (c) 0.0168 (d) 0.168
18. 18.2.5 × 3.5 — where does the decimal point go? (a) 87.5 (b) 0.875 (c) 0.0875 (d) 8.75
19. 19.8.4 × 0.7 — where does the decimal point go? (a) 58.8 (b) 0.588 (c) 0.0588 (d) 5.88
20. 20.0.97 × 0.4 — where does the decimal point go? (a) 3.88 (b) 0.00388 (c) 0.388 (d) 0.0388
21. 21.6.2 × 2.9 — where does the decimal point go? (a) 0.1798 (b) 179.8 (c) 1.798 (d) 17.98
22. 22.0.82 × 4.1 — where does the decimal point go? (a) 0.3362 (b) 3.362 (c) 0.03362 (d) 33.62
23. 23.4.1 × 0.3 — where does the decimal point go? (a) 0.123 (b) 1.23 (c) 12.3 (d) 0.0123
24. 24.4.9 × 15 — where does the decimal point go? (a) 0.735 (b) 735 (c) 73.5 (d) 7.35
25. 25.3.9 × 0.8 — where does the decimal point go? (a) 0.312 (b) 3.12 (c) 31.2 (d) 0.0312
26. 26.0.82 × 0.8 — where does the decimal point go? (a) 0.0656 (b) 0.00656 (c) 0.656 (d) 6.56
27. 27.4.3 × 4 — where does the decimal point go? (a) 17.2 (b) 0.172 (c) 172 (d) 1.72
28. 28.0.23 × 39 — where does the decimal point go? (a) 8.97 (b) 89.7 (c) 0.897 (d) 0.0897
29. 29.0.67 × 28 — where does the decimal point go? (a) 1.876 (b) 0.1876 (c) 18.76 (d) 187.6
30. 30.0.83 × 3.3 — where does the decimal point go? (a) 27.39 (b) 2.739 (c) 0.2739 (d) 0.02739
31. 31.7.7 × 1.1 — where does the decimal point go? (a) 0.847 (b) 0.0847 (c) 84.7 (d) 8.47
32. 32.3.9 × 7 — where does the decimal point go? (a) 2.73 (b) 0.273 (c) 273 (d) 27.3
33. 33.6.2 × 49 — where does the decimal point go? (a) 303.8 (b) 3.038 (c) 3038 (d) 30.38
34. 34.3.3 × 7 — where does the decimal point go? (a) 23.1 (b) 0.231 (c) 2.31 (d) 231
35. 35.5.6 × 6 — where does the decimal point go? (a) 3.36 (b) 33.6 (c) 336 (d) 0.336
36. 36.0.41 × 2 — where does the decimal point go? (a) 0.0082 (b) 8.2 (c) 0.82 (d) 0.082
37. 37.0.23 × 2.9 — where does the decimal point go? (a) 6.67 (b) 0.667 (c) 0.00667 (d) 0.0667
38. 38.6.9 × 0.2 — where does the decimal point go? (a) 0.0138 (b) 1.38 (c) 0.138 (d) 13.8
39. 39.6.2 × 4.4 — where does the decimal point go? (a) 0.2728 (b) 27.28 (c) 272.8 (d) 2.728
40. 40.0.59 × 31 — where does the decimal point go? (a) 18.29 (b) 182.9 (c) 0.1829 (d) 1.829

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