Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 979 · 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. 1.8.4 × 3 — where does the decimal point go? (a) 252 (b) 25.2 (c) 2.52 (d) 0.252
2. 2.8.5 × 2.1 — where does the decimal point go? (a) 17.85 (b) 178.5 (c) 1.785 (d) 0.1785
3. 3.0.83 × 13 — where does the decimal point go? (a) 1.079 (b) 10.79 (c) 0.1079 (d) 107.9
4. 4.0.63 × 1.2 — where does the decimal point go? (a) 0.0756 (b) 0.756 (c) 0.00756 (d) 7.56
5. 5.3.4 × 2 — where does the decimal point go? (a) 0.68 (b) 6.8 (c) 0.068 (d) 68
6. 6.3.7 × 4 — where does the decimal point go? (a) 0.148 (b) 1.48 (c) 148 (d) 14.8
7. 7.6.3 × 0.8 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 0.504 (d) 0.0504
8. 8.2.8 × 48 — where does the decimal point go? (a) 13.44 (b) 1344 (c) 134.4 (d) 1.344
9. 9.3.2 × 47 — where does the decimal point go? (a) 150.4 (b) 1.504 (c) 15.04 (d) 1504
10. 10.1.4 × 2 — where does the decimal point go? (a) 28 (b) 0.28 (c) 2.8 (d) 0.028
11. 11.0.39 × 21 — where does the decimal point go? (a) 8.19 (b) 81.9 (c) 0.819 (d) 0.0819
12. 12.3.1 × 9 — where does the decimal point go? (a) 279 (b) 2.79 (c) 27.9 (d) 0.279
13. 13.0.13 × 5 — where does the decimal point go? (a) 6.5 (b) 0.65 (c) 0.0065 (d) 0.065
14. 14.0.74 × 3.7 — where does the decimal point go? (a) 27.38 (b) 0.02738 (c) 2.738 (d) 0.2738
15. 15.0.47 × 0.2 — where does the decimal point go? (a) 0.094 (b) 0.0094 (c) 0.00094 (d) 0.94
16. 16.0.76 × 4 — where does the decimal point go? (a) 3.04 (b) 0.0304 (c) 30.4 (d) 0.304
17. 17.6.3 × 6 — where does the decimal point go? (a) 37.8 (b) 378 (c) 0.378 (d) 3.78
18. 18.6.1 × 2.3 — where does the decimal point go? (a) 140.3 (b) 14.03 (c) 1.403 (d) 0.1403
19. 19.3.8 × 1.4 — where does the decimal point go? (a) 0.0532 (b) 5.32 (c) 0.532 (d) 53.2
20. 20.7.7 × 28 — where does the decimal point go? (a) 215.6 (b) 2156 (c) 2.156 (d) 21.56
21. 21.0.28 × 0.7 — where does the decimal point go? (a) 1.96 (b) 0.00196 (c) 0.0196 (d) 0.196
22. 22.1.4 × 0.7 — where does the decimal point go? (a) 0.0098 (b) 0.98 (c) 9.8 (d) 0.098
23. 23.0.97 × 2 — where does the decimal point go? (a) 1.94 (b) 19.4 (c) 0.0194 (d) 0.194
24. 24.6.9 × 39 — where does the decimal point go? (a) 2691 (b) 2.691 (c) 26.91 (d) 269.1
25. 25.6.7 × 31 — where does the decimal point go? (a) 207.7 (b) 20.77 (c) 2.077 (d) 2077
26. 26.8.3 × 0.4 — where does the decimal point go? (a) 33.2 (b) 0.332 (c) 3.32 (d) 0.0332
27. 27.0.85 × 0.5 — where does the decimal point go? (a) 0.425 (b) 0.0425 (c) 4.25 (d) 0.00425
28. 28.0.54 × 13 — where does the decimal point go? (a) 7.02 (b) 0.0702 (c) 0.702 (d) 70.2
29. 29.0.12 × 0.3 — where does the decimal point go? (a) 0.00036 (b) 0.036 (c) 0.0036 (d) 0.36
30. 30.1.3 × 0.2 — where does the decimal point go? (a) 2.6 (b) 0.0026 (c) 0.26 (d) 0.026
31. 31.0.64 × 1.2 — where does the decimal point go? (a) 0.0768 (b) 7.68 (c) 0.768 (d) 0.00768
32. 32.0.24 × 14 — where does the decimal point go? (a) 3.36 (b) 0.0336 (c) 33.6 (d) 0.336
33. 33.0.43 × 0.9 — where does the decimal point go? (a) 0.387 (b) 3.87 (c) 0.00387 (d) 0.0387
34. 34.7.8 × 2.7 — where does the decimal point go? (a) 0.2106 (b) 2.106 (c) 21.06 (d) 210.6
35. 35.1.7 × 9 — where does the decimal point go? (a) 153 (b) 0.153 (c) 1.53 (d) 15.3
36. 36.3.3 × 2.8 — where does the decimal point go? (a) 0.924 (b) 9.24 (c) 0.0924 (d) 92.4
37. 37.0.96 × 0.9 — where does the decimal point go? (a) 8.64 (b) 0.864 (c) 0.00864 (d) 0.0864
38. 38.0.39 × 2 — where does the decimal point go? (a) 7.8 (b) 0.078 (c) 0.0078 (d) 0.78
39. 39.0.57 × 47 — where does the decimal point go? (a) 0.2679 (b) 267.9 (c) 2.679 (d) 26.79
40. 40.1.3 × 0.5 — where does the decimal point go? (a) 0.0065 (b) 0.065 (c) 6.5 (d) 0.65

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