Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 205 · 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. 1.0.31 × 46 — where does the decimal point go? (a) 14.26 (b) 0.1426 (c) 142.6 (d) 1.426
2. 2.8.3 × 27 — where does the decimal point go? (a) 224.1 (b) 2.241 (c) 2241 (d) 22.41
3. 3.0.17 × 0.5 — where does the decimal point go? (a) 0.085 (b) 0.00085 (c) 0.0085 (d) 0.85
4. 4.6.2 × 0.4 — where does the decimal point go? (a) 0.248 (b) 0.0248 (c) 24.8 (d) 2.48
5. 5.0.28 × 31 — where does the decimal point go? (a) 0.0868 (b) 86.8 (c) 0.868 (d) 8.68
6. 6.4.3 × 47 — where does the decimal point go? (a) 2.021 (b) 20.21 (c) 2021 (d) 202.1
7. 7.0.73 × 4.6 — where does the decimal point go? (a) 33.58 (b) 3.358 (c) 0.3358 (d) 0.03358
8. 8.0.81 × 45 — where does the decimal point go? (a) 364.5 (b) 3.645 (c) 0.3645 (d) 36.45
9. 9.5.6 × 2 — where does the decimal point go? (a) 1.12 (b) 0.112 (c) 112 (d) 11.2
10. 10.7.6 × 0.9 — where does the decimal point go? (a) 0.0684 (b) 0.684 (c) 6.84 (d) 68.4
11. 11.0.32 × 49 — where does the decimal point go? (a) 156.8 (b) 15.68 (c) 1.568 (d) 0.1568
12. 12.2.1 × 1.2 — where does the decimal point go? (a) 25.2 (b) 2.52 (c) 0.252 (d) 0.0252
13. 13.0.69 × 2 — where does the decimal point go? (a) 1.38 (b) 0.138 (c) 0.0138 (d) 13.8
14. 14.0.18 × 7 — where does the decimal point go? (a) 0.0126 (b) 0.126 (c) 1.26 (d) 12.6
15. 15.1.9 × 3.6 — where does the decimal point go? (a) 68.4 (b) 0.684 (c) 0.0684 (d) 6.84
16. 16.0.63 × 31 — where does the decimal point go? (a) 0.1953 (b) 195.3 (c) 19.53 (d) 1.953
17. 17.6.2 × 2 — where does the decimal point go? (a) 0.124 (b) 1.24 (c) 124 (d) 12.4
18. 18.6.7 × 27 — where does the decimal point go? (a) 18.09 (b) 1.809 (c) 180.9 (d) 1809
19. 19.1.9 × 44 — where does the decimal point go? (a) 836 (b) 0.836 (c) 8.36 (d) 83.6
20. 20.0.87 × 1.7 — where does the decimal point go? (a) 0.1479 (b) 14.79 (c) 1.479 (d) 0.01479
21. 21.0.88 × 0.2 — where does the decimal point go? (a) 0.00176 (b) 0.176 (c) 1.76 (d) 0.0176
22. 22.0.66 × 16 — where does the decimal point go? (a) 0.1056 (b) 105.6 (c) 1.056 (d) 10.56
23. 23.6.3 × 8 — where does the decimal point go? (a) 50.4 (b) 504 (c) 0.504 (d) 5.04
24. 24.0.26 × 1.2 — where does the decimal point go? (a) 0.312 (b) 3.12 (c) 0.0312 (d) 0.00312
25. 25.4.9 × 0.8 — where does the decimal point go? (a) 3.92 (b) 0.0392 (c) 0.392 (d) 39.2
26. 26.0.26 × 3 — where does the decimal point go? (a) 7.8 (b) 0.78 (c) 0.0078 (d) 0.078
27. 27.8.4 × 32 — where does the decimal point go? (a) 2.688 (b) 2688 (c) 26.88 (d) 268.8
28. 28.2.1 × 0.7 — where does the decimal point go? (a) 1.47 (b) 0.147 (c) 14.7 (d) 0.0147
29. 29.3.1 × 45 — where does the decimal point go? (a) 1.395 (b) 13.95 (c) 1395 (d) 139.5
30. 30.0.88 × 1.2 — where does the decimal point go? (a) 0.01056 (b) 0.1056 (c) 1.056 (d) 10.56
31. 31.0.96 × 4.3 — where does the decimal point go? (a) 41.28 (b) 0.04128 (c) 0.4128 (d) 4.128
32. 32.0.89 × 0.2 — where does the decimal point go? (a) 0.178 (b) 1.78 (c) 0.00178 (d) 0.0178
33. 33.3.7 × 0.4 — where does the decimal point go? (a) 0.148 (b) 0.0148 (c) 14.8 (d) 1.48
34. 34.2.3 × 0.2 — where does the decimal point go? (a) 4.6 (b) 0.046 (c) 0.46 (d) 0.0046
35. 35.0.26 × 24 — where does the decimal point go? (a) 62.4 (b) 0.0624 (c) 6.24 (d) 0.624
36. 36.3.5 × 0.9 — where does the decimal point go? (a) 0.0315 (b) 3.15 (c) 0.315 (d) 31.5
37. 37.0.71 × 0.7 — where does the decimal point go? (a) 0.00497 (b) 0.497 (c) 0.0497 (d) 4.97
38. 38.0.14 × 6 — where does the decimal point go? (a) 8.4 (b) 0.0084 (c) 0.084 (d) 0.84
39. 39.0.83 × 0.7 — where does the decimal point go? (a) 0.581 (b) 0.0581 (c) 0.00581 (d) 5.81
40. 40.0.38 × 19 — where does the decimal point go? (a) 0.722 (b) 7.22 (c) 0.0722 (d) 72.2

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