Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 611 · 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. 1.5.3 × 3.4 — where does the decimal point go? (a) 1.802 (b) 180.2 (c) 0.1802 (d) 18.02
2. 2.0.31 × 1.5 — where does the decimal point go? (a) 0.0465 (b) 0.465 (c) 0.00465 (d) 4.65
3. 3.4.9 × 44 — where does the decimal point go? (a) 2156 (b) 215.6 (c) 21.56 (d) 2.156
4. 4.0.99 × 35 — where does the decimal point go? (a) 3.465 (b) 346.5 (c) 34.65 (d) 0.3465
5. 5.0.79 × 2.1 — where does the decimal point go? (a) 0.01659 (b) 16.59 (c) 0.1659 (d) 1.659
6. 6.5.6 × 24 — where does the decimal point go? (a) 134.4 (b) 1.344 (c) 13.44 (d) 1344
7. 7.0.16 × 0.2 — where does the decimal point go? (a) 0.032 (b) 0.00032 (c) 0.0032 (d) 0.32
8. 8.2.3 × 21 — where does the decimal point go? (a) 483 (b) 0.483 (c) 4.83 (d) 48.3
9. 9.1.8 × 3 — where does the decimal point go? (a) 5.4 (b) 0.54 (c) 54 (d) 0.054
10. 10.5.8 × 3 — where does the decimal point go? (a) 17.4 (b) 1.74 (c) 0.174 (d) 174
11. 11.3.2 × 0.2 — where does the decimal point go? (a) 6.4 (b) 0.0064 (c) 0.64 (d) 0.064
12. 12.0.18 × 6 — where does the decimal point go? (a) 1.08 (b) 0.0108 (c) 10.8 (d) 0.108
13. 13.9.2 × 0.9 — where does the decimal point go? (a) 0.0828 (b) 8.28 (c) 0.828 (d) 82.8
14. 14.0.64 × 3 — where does the decimal point go? (a) 0.0192 (b) 1.92 (c) 0.192 (d) 19.2
15. 15.0.48 × 0.2 — where does the decimal point go? (a) 0.00096 (b) 0.096 (c) 0.96 (d) 0.0096
16. 16.1.6 × 2.8 — where does the decimal point go? (a) 0.448 (b) 0.0448 (c) 44.8 (d) 4.48
17. 17.0.14 × 6 — where does the decimal point go? (a) 8.4 (b) 0.0084 (c) 0.84 (d) 0.084
18. 18.7.1 × 0.7 — where does the decimal point go? (a) 0.0497 (b) 49.7 (c) 4.97 (d) 0.497
19. 19.0.79 × 1.8 — where does the decimal point go? (a) 0.1422 (b) 1.422 (c) 14.22 (d) 0.01422
20. 20.0.19 × 3.4 — where does the decimal point go? (a) 6.46 (b) 0.646 (c) 0.00646 (d) 0.0646
21. 21.0.39 × 27 — where does the decimal point go? (a) 105.3 (b) 1.053 (c) 0.1053 (d) 10.53
22. 22.3.3 × 3 — where does the decimal point go? (a) 9.9 (b) 99 (c) 0.099 (d) 0.99
23. 23.0.64 × 0.3 — where does the decimal point go? (a) 0.00192 (b) 1.92 (c) 0.0192 (d) 0.192
24. 24.8.3 × 0.5 — where does the decimal point go? (a) 41.5 (b) 4.15 (c) 0.0415 (d) 0.415
25. 25.1.8 × 0.8 — where does the decimal point go? (a) 14.4 (b) 0.0144 (c) 0.144 (d) 1.44
26. 26.5.7 × 9 — where does the decimal point go? (a) 5.13 (b) 51.3 (c) 513 (d) 0.513
27. 27.6.2 × 0.9 — where does the decimal point go? (a) 5.58 (b) 0.558 (c) 55.8 (d) 0.0558
28. 28.2.2 × 43 — where does the decimal point go? (a) 0.946 (b) 9.46 (c) 94.6 (d) 946
29. 29.0.64 × 0.9 — where does the decimal point go? (a) 0.00576 (b) 0.576 (c) 0.0576 (d) 5.76
30. 30.7.6 × 0.6 — where does the decimal point go? (a) 0.456 (b) 4.56 (c) 0.0456 (d) 45.6
31. 31.0.82 × 7 — where does the decimal point go? (a) 0.0574 (b) 0.574 (c) 5.74 (d) 57.4
32. 32.9.3 × 6 — where does the decimal point go? (a) 558 (b) 0.558 (c) 55.8 (d) 5.58
33. 33.6.9 × 33 — where does the decimal point go? (a) 22.77 (b) 2.277 (c) 227.7 (d) 2277
34. 34.8.1 × 2.3 — where does the decimal point go? (a) 1.863 (b) 18.63 (c) 186.3 (d) 0.1863
35. 35.2.5 × 3.5 — where does the decimal point go? (a) 0.875 (b) 87.5 (c) 8.75 (d) 0.0875
36. 36.7.1 × 7 — where does the decimal point go? (a) 497 (b) 0.497 (c) 49.7 (d) 4.97
37. 37.0.99 × 4 — where does the decimal point go? (a) 0.0396 (b) 3.96 (c) 0.396 (d) 39.6
38. 38.0.41 × 0.3 — where does the decimal point go? (a) 0.0123 (b) 0.123 (c) 0.00123 (d) 1.23
39. 39.2.8 × 4.9 — where does the decimal point go? (a) 1.372 (b) 137.2 (c) 0.1372 (d) 13.72
40. 40.6.1 × 32 — where does the decimal point go? (a) 195.2 (b) 1952 (c) 1.952 (d) 19.52

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