Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 116 · 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. 1.4.8 × 3.3 — where does the decimal point go? (a) 1.584 (b) 0.1584 (c) 158.4 (d) 15.84
2. 2.9.3 × 0.8 — where does the decimal point go? (a) 74.4 (b) 7.44 (c) 0.0744 (d) 0.744
3. 3.0.26 × 9 — where does the decimal point go? (a) 23.4 (b) 0.234 (c) 0.0234 (d) 2.34
4. 4.9.1 × 6 — where does the decimal point go? (a) 5.46 (b) 0.546 (c) 54.6 (d) 546
5. 5.7.1 × 2.1 — where does the decimal point go? (a) 0.1491 (b) 149.1 (c) 1.491 (d) 14.91
6. 6.9.1 × 3 — where does the decimal point go? (a) 273 (b) 2.73 (c) 0.273 (d) 27.3
7. 7.0.69 × 6 — where does the decimal point go? (a) 0.414 (b) 4.14 (c) 41.4 (d) 0.0414
8. 8.0.73 × 28 — where does the decimal point go? (a) 20.44 (b) 0.2044 (c) 204.4 (d) 2.044
9. 9.1.8 × 6 — where does the decimal point go? (a) 10.8 (b) 108 (c) 1.08 (d) 0.108
10. 10.9.3 × 23 — where does the decimal point go? (a) 2.139 (b) 2139 (c) 213.9 (d) 21.39
11. 11.0.51 × 5 — where does the decimal point go? (a) 2.55 (b) 0.0255 (c) 25.5 (d) 0.255
12. 12.0.58 × 0.8 — where does the decimal point go? (a) 4.64 (b) 0.0464 (c) 0.464 (d) 0.00464
13. 13.0.55 × 25 — where does the decimal point go? (a) 0.1375 (b) 137.5 (c) 1.375 (d) 13.75
14. 14.0.69 × 0.8 — where does the decimal point go? (a) 5.52 (b) 0.0552 (c) 0.00552 (d) 0.552
15. 15.0.97 × 2 — where does the decimal point go? (a) 0.194 (b) 19.4 (c) 0.0194 (d) 1.94
16. 16.0.99 × 0.3 — where does the decimal point go? (a) 0.00297 (b) 0.297 (c) 0.0297 (d) 2.97
17. 17.0.78 × 9 — where does the decimal point go? (a) 7.02 (b) 0.702 (c) 70.2 (d) 0.0702
18. 18.0.34 × 17 — where does the decimal point go? (a) 0.0578 (b) 5.78 (c) 0.578 (d) 57.8
19. 19.0.88 × 4.6 — where does the decimal point go? (a) 0.04048 (b) 0.4048 (c) 4.048 (d) 40.48
20. 20.0.81 × 0.2 — where does the decimal point go? (a) 1.62 (b) 0.00162 (c) 0.162 (d) 0.0162
21. 21.7.7 × 4.1 — where does the decimal point go? (a) 31.57 (b) 0.3157 (c) 3.157 (d) 315.7
22. 22.1.8 × 0.8 — where does the decimal point go? (a) 1.44 (b) 0.0144 (c) 0.144 (d) 14.4
23. 23.0.48 × 8 — where does the decimal point go? (a) 3.84 (b) 38.4 (c) 0.0384 (d) 0.384
24. 24.0.36 × 7 — where does the decimal point go? (a) 0.0252 (b) 0.252 (c) 25.2 (d) 2.52
25. 25.3.3 × 0.4 — where does the decimal point go? (a) 1.32 (b) 0.0132 (c) 13.2 (d) 0.132
26. 26.8.6 × 0.9 — where does the decimal point go? (a) 0.0774 (b) 77.4 (c) 0.774 (d) 7.74
27. 27.3.8 × 0.6 — where does the decimal point go? (a) 0.228 (b) 22.8 (c) 0.0228 (d) 2.28
28. 28.0.73 × 0.4 — where does the decimal point go? (a) 0.00292 (b) 0.292 (c) 0.0292 (d) 2.92
29. 29.0.98 × 2.7 — where does the decimal point go? (a) 2.646 (b) 26.46 (c) 0.02646 (d) 0.2646
30. 30.8.1 × 4.5 — where does the decimal point go? (a) 364.5 (b) 0.3645 (c) 36.45 (d) 3.645
31. 31.0.29 × 3 — where does the decimal point go? (a) 8.7 (b) 0.087 (c) 0.87 (d) 0.0087
32. 32.7.8 × 44 — where does the decimal point go? (a) 343.2 (b) 34.32 (c) 3432 (d) 3.432
33. 33.0.67 × 5 — where does the decimal point go? (a) 0.0335 (b) 3.35 (c) 0.335 (d) 33.5
34. 34.3.2 × 7 — where does the decimal point go? (a) 2.24 (b) 0.224 (c) 22.4 (d) 224
35. 35.0.97 × 9 — where does the decimal point go? (a) 8.73 (b) 0.873 (c) 0.0873 (d) 87.3
36. 36.0.31 × 3.8 — where does the decimal point go? (a) 0.1178 (b) 1.178 (c) 11.78 (d) 0.01178
37. 37.5.6 × 17 — where does the decimal point go? (a) 95.2 (b) 952 (c) 0.952 (d) 9.52
38. 38.2.3 × 2 — where does the decimal point go? (a) 46 (b) 4.6 (c) 0.046 (d) 0.46
39. 39.0.33 × 14 — where does the decimal point go? (a) 0.0462 (b) 0.462 (c) 4.62 (d) 46.2
40. 40.0.17 × 17 — where does the decimal point go? (a) 2.89 (b) 0.289 (c) 28.9 (d) 0.0289

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