Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 303 · 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. 1.9.3 × 43 — where does the decimal point go? (a) 399.9 (b) 39.99 (c) 3.999 (d) 3999
2. 2.7.6 × 9 — where does the decimal point go? (a) 68.4 (b) 0.684 (c) 684 (d) 6.84
3. 3.0.82 × 3 — where does the decimal point go? (a) 24.6 (b) 0.246 (c) 0.0246 (d) 2.46
4. 4.6.3 × 9 — where does the decimal point go? (a) 567 (b) 0.567 (c) 5.67 (d) 56.7
5. 5.8.7 × 0.5 — where does the decimal point go? (a) 4.35 (b) 0.435 (c) 43.5 (d) 0.0435
6. 6.0.39 × 4 — where does the decimal point go? (a) 15.6 (b) 1.56 (c) 0.0156 (d) 0.156
7. 7.9.2 × 0.9 — where does the decimal point go? (a) 0.0828 (b) 0.828 (c) 82.8 (d) 8.28
8. 8.0.84 × 12 — where does the decimal point go? (a) 10.08 (b) 1.008 (c) 100.8 (d) 0.1008
9. 9.0.13 × 3.9 — where does the decimal point go? (a) 0.0507 (b) 0.00507 (c) 5.07 (d) 0.507
10. 10.9.2 × 3.3 — where does the decimal point go? (a) 30.36 (b) 303.6 (c) 0.3036 (d) 3.036
11. 11.8.3 × 42 — where does the decimal point go? (a) 3.486 (b) 34.86 (c) 3486 (d) 348.6
12. 12.0.76 × 9 — where does the decimal point go? (a) 0.0684 (b) 0.684 (c) 68.4 (d) 6.84
13. 13.2.3 × 2 — where does the decimal point go? (a) 46 (b) 0.046 (c) 4.6 (d) 0.46
14. 14.0.66 × 47 — where does the decimal point go? (a) 31.02 (b) 3.102 (c) 0.3102 (d) 310.2
15. 15.0.42 × 31 — where does the decimal point go? (a) 13.02 (b) 0.1302 (c) 1.302 (d) 130.2
16. 16.0.33 × 9 — where does the decimal point go? (a) 29.7 (b) 2.97 (c) 0.0297 (d) 0.297
17. 17.4.5 × 3 — where does the decimal point go? (a) 0.135 (b) 1.35 (c) 13.5 (d) 135
18. 18.0.59 × 3 — where does the decimal point go? (a) 0.0177 (b) 1.77 (c) 0.177 (d) 17.7
19. 19.5.9 × 3 — where does the decimal point go? (a) 177 (b) 17.7 (c) 0.177 (d) 1.77
20. 20.0.66 × 24 — where does the decimal point go? (a) 1.584 (b) 15.84 (c) 0.1584 (d) 158.4
21. 21.8.7 × 11 — where does the decimal point go? (a) 95.7 (b) 0.957 (c) 9.57 (d) 957
22. 22.6.5 × 0.9 — where does the decimal point go? (a) 5.85 (b) 0.0585 (c) 58.5 (d) 0.585
23. 23.0.37 × 3.8 — where does the decimal point go? (a) 0.01406 (b) 14.06 (c) 1.406 (d) 0.1406
24. 24.9.7 × 6 — where does the decimal point go? (a) 0.582 (b) 582 (c) 58.2 (d) 5.82
25. 25.0.29 × 0.3 — where does the decimal point go? (a) 0.00087 (b) 0.87 (c) 0.0087 (d) 0.087
26. 26.0.92 × 13 — where does the decimal point go? (a) 1.196 (b) 11.96 (c) 119.6 (d) 0.1196
27. 27.8.2 × 7 — where does the decimal point go? (a) 0.574 (b) 574 (c) 57.4 (d) 5.74
28. 28.0.53 × 2.3 — where does the decimal point go? (a) 0.1219 (b) 1.219 (c) 0.01219 (d) 12.19
29. 29.9.5 × 4.9 — where does the decimal point go? (a) 4.655 (b) 0.4655 (c) 46.55 (d) 465.5
30. 30.3.5 × 9 — where does the decimal point go? (a) 0.315 (b) 3.15 (c) 315 (d) 31.5
31. 31.0.64 × 1.6 — where does the decimal point go? (a) 10.24 (b) 1.024 (c) 0.1024 (d) 0.01024
32. 32.2.8 × 2.7 — where does the decimal point go? (a) 7.56 (b) 75.6 (c) 0.756 (d) 0.0756
33. 33.0.67 × 0.9 — where does the decimal point go? (a) 0.00603 (b) 0.0603 (c) 6.03 (d) 0.603
34. 34.8.3 × 3 — where does the decimal point go? (a) 0.249 (b) 24.9 (c) 2.49 (d) 249
35. 35.0.15 × 3.3 — where does the decimal point go? (a) 0.00495 (b) 0.0495 (c) 4.95 (d) 0.495
36. 36.0.57 × 17 — where does the decimal point go? (a) 0.969 (b) 0.0969 (c) 9.69 (d) 96.9
37. 37.0.79 × 7 — where does the decimal point go? (a) 0.553 (b) 55.3 (c) 0.0553 (d) 5.53
38. 38.5.2 × 0.4 — where does the decimal point go? (a) 0.208 (b) 20.8 (c) 0.0208 (d) 2.08
39. 39.0.92 × 1.6 — where does the decimal point go? (a) 1.472 (b) 14.72 (c) 0.1472 (d) 0.01472
40. 40.2.7 × 0.4 — where does the decimal point go? (a) 0.108 (b) 1.08 (c) 0.0108 (d) 10.8

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