Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 341 · 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. 1.2.6 × 4.9 — where does the decimal point go? (a) 12.74 (b) 0.1274 (c) 1.274 (d) 127.4
2. 2.3.6 × 0.4 — where does the decimal point go? (a) 14.4 (b) 0.144 (c) 0.0144 (d) 1.44
3. 3.7.8 × 1.3 — where does the decimal point go? (a) 1.014 (b) 101.4 (c) 10.14 (d) 0.1014
4. 4.5.7 × 12 — where does the decimal point go? (a) 0.684 (b) 6.84 (c) 68.4 (d) 684
5. 5.0.16 × 41 — where does the decimal point go? (a) 6.56 (b) 0.656 (c) 0.0656 (d) 65.6
6. 6.2.7 × 17 — where does the decimal point go? (a) 0.459 (b) 459 (c) 4.59 (d) 45.9
7. 7.5.2 × 7 — where does the decimal point go? (a) 3.64 (b) 0.364 (c) 364 (d) 36.4
8. 8.0.28 × 13 — where does the decimal point go? (a) 0.364 (b) 36.4 (c) 3.64 (d) 0.0364
9. 9.0.84 × 2.9 — where does the decimal point go? (a) 0.02436 (b) 0.2436 (c) 24.36 (d) 2.436
10. 10.4.6 × 2 — where does the decimal point go? (a) 0.092 (b) 92 (c) 9.2 (d) 0.92
11. 11.4.3 × 2 — where does the decimal point go? (a) 8.6 (b) 0.086 (c) 86 (d) 0.86
12. 12.8.8 × 32 — where does the decimal point go? (a) 281.6 (b) 2.816 (c) 2816 (d) 28.16
13. 13.2.4 × 24 — where does the decimal point go? (a) 57.6 (b) 0.576 (c) 5.76 (d) 576
14. 14.5.7 × 1.4 — where does the decimal point go? (a) 0.798 (b) 79.8 (c) 7.98 (d) 0.0798
15. 15.2.4 × 2 — where does the decimal point go? (a) 4.8 (b) 0.48 (c) 48 (d) 0.048
16. 16.0.17 × 0.5 — where does the decimal point go? (a) 0.85 (b) 0.0085 (c) 0.00085 (d) 0.085
17. 17.0.39 × 3.7 — where does the decimal point go? (a) 0.1443 (b) 14.43 (c) 1.443 (d) 0.01443
18. 18.8.5 × 19 — where does the decimal point go? (a) 1.615 (b) 1615 (c) 161.5 (d) 16.15
19. 19.0.47 × 13 — where does the decimal point go? (a) 0.0611 (b) 0.611 (c) 61.1 (d) 6.11
20. 20.5.3 × 2.2 — where does the decimal point go? (a) 1.166 (b) 116.6 (c) 11.66 (d) 0.1166
21. 21.5.6 × 34 — where does the decimal point go? (a) 1.904 (b) 1904 (c) 19.04 (d) 190.4
22. 22.0.48 × 29 — where does the decimal point go? (a) 139.2 (b) 0.1392 (c) 13.92 (d) 1.392
23. 23.0.31 × 12 — where does the decimal point go? (a) 0.0372 (b) 3.72 (c) 0.372 (d) 37.2
24. 24.0.18 × 28 — where does the decimal point go? (a) 5.04 (b) 0.504 (c) 50.4 (d) 0.0504
25. 25.0.34 × 0.4 — where does the decimal point go? (a) 1.36 (b) 0.00136 (c) 0.0136 (d) 0.136
26. 26.0.41 × 6 — where does the decimal point go? (a) 24.6 (b) 2.46 (c) 0.0246 (d) 0.246
27. 27.0.63 × 4 — where does the decimal point go? (a) 25.2 (b) 0.0252 (c) 2.52 (d) 0.252
28. 28.4.1 × 4.8 — where does the decimal point go? (a) 1.968 (b) 196.8 (c) 19.68 (d) 0.1968
29. 29.2.2 × 19 — where does the decimal point go? (a) 4.18 (b) 0.418 (c) 41.8 (d) 418
30. 30.5.2 × 0.3 — where does the decimal point go? (a) 1.56 (b) 0.156 (c) 0.0156 (d) 15.6
31. 31.8.7 × 11 — where does the decimal point go? (a) 9.57 (b) 0.957 (c) 957 (d) 95.7
32. 32.0.96 × 0.6 — where does the decimal point go? (a) 5.76 (b) 0.00576 (c) 0.0576 (d) 0.576
33. 33.4.1 × 7 — where does the decimal point go? (a) 2.87 (b) 287 (c) 28.7 (d) 0.287
34. 34.0.28 × 0.4 — where does the decimal point go? (a) 1.12 (b) 0.0112 (c) 0.112 (d) 0.00112
35. 35.4.4 × 4 — where does the decimal point go? (a) 17.6 (b) 0.176 (c) 1.76 (d) 176
36. 36.6.3 × 0.2 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 12.6 (d) 0.126
37. 37.0.52 × 0.8 — where does the decimal point go? (a) 4.16 (b) 0.416 (c) 0.0416 (d) 0.00416
38. 38.0.94 × 7 — where does the decimal point go? (a) 0.658 (b) 0.0658 (c) 65.8 (d) 6.58
39. 39.0.75 × 0.7 — where does the decimal point go? (a) 5.25 (b) 0.00525 (c) 0.0525 (d) 0.525
40. 40.2.9 × 0.6 — where does the decimal point go? (a) 1.74 (b) 0.0174 (c) 0.174 (d) 17.4

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