Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 908 · 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. 1.8.2 × 4.7 — where does the decimal point go? (a) 38.54 (b) 385.4 (c) 0.3854 (d) 3.854
2. 2.7.7 × 11 — where does the decimal point go? (a) 847 (b) 0.847 (c) 8.47 (d) 84.7
3. 3.0.16 × 9 — where does the decimal point go? (a) 0.144 (b) 0.0144 (c) 14.4 (d) 1.44
4. 4.0.47 × 2 — where does the decimal point go? (a) 0.94 (b) 0.0094 (c) 0.094 (d) 9.4
5. 5.9.4 × 3.9 — where does the decimal point go? (a) 36.66 (b) 3.666 (c) 366.6 (d) 0.3666
6. 6.6.7 × 0.9 — where does the decimal point go? (a) 60.3 (b) 6.03 (c) 0.0603 (d) 0.603
7. 7.8.3 × 3 — where does the decimal point go? (a) 24.9 (b) 2.49 (c) 0.249 (d) 249
8. 8.0.59 × 1.5 — where does the decimal point go? (a) 0.00885 (b) 0.885 (c) 0.0885 (d) 8.85
9. 9.9.6 × 3 — where does the decimal point go? (a) 2.88 (b) 0.288 (c) 288 (d) 28.8
10. 10.0.92 × 1.7 — where does the decimal point go? (a) 0.1564 (b) 1.564 (c) 15.64 (d) 0.01564
11. 11.3.9 × 12 — where does the decimal point go? (a) 468 (b) 4.68 (c) 0.468 (d) 46.8
12. 12.0.23 × 32 — where does the decimal point go? (a) 0.736 (b) 73.6 (c) 0.0736 (d) 7.36
13. 13.9.3 × 0.8 — where does the decimal point go? (a) 0.744 (b) 74.4 (c) 7.44 (d) 0.0744
14. 14.0.53 × 2 — where does the decimal point go? (a) 10.6 (b) 0.106 (c) 0.0106 (d) 1.06
15. 15.0.58 × 9 — where does the decimal point go? (a) 5.22 (b) 0.522 (c) 0.0522 (d) 52.2
16. 16.2.4 × 4 — where does the decimal point go? (a) 96 (b) 9.6 (c) 0.096 (d) 0.96
17. 17.0.13 × 4.9 — where does the decimal point go? (a) 0.00637 (b) 6.37 (c) 0.637 (d) 0.0637
18. 18.2.9 × 0.3 — where does the decimal point go? (a) 0.87 (b) 8.7 (c) 0.0087 (d) 0.087
19. 19.3.4 × 3.3 — where does the decimal point go? (a) 0.1122 (b) 112.2 (c) 11.22 (d) 1.122
20. 20.3.2 × 7 — where does the decimal point go? (a) 0.224 (b) 224 (c) 2.24 (d) 22.4
21. 21.3.7 × 0.6 — where does the decimal point go? (a) 2.22 (b) 0.0222 (c) 22.2 (d) 0.222
22. 22.0.77 × 45 — where does the decimal point go? (a) 0.3465 (b) 346.5 (c) 34.65 (d) 3.465
23. 23.0.46 × 4 — where does the decimal point go? (a) 0.0184 (b) 1.84 (c) 0.184 (d) 18.4
24. 24.3.1 × 0.3 — where does the decimal point go? (a) 0.093 (b) 0.93 (c) 9.3 (d) 0.0093
25. 25.4.1 × 3.8 — where does the decimal point go? (a) 155.8 (b) 0.1558 (c) 15.58 (d) 1.558
26. 26.0.96 × 22 — where does the decimal point go? (a) 211.2 (b) 0.2112 (c) 2.112 (d) 21.12
27. 27.5.1 × 9 — where does the decimal point go? (a) 459 (b) 45.9 (c) 0.459 (d) 4.59
28. 28.7.1 × 4 — where does the decimal point go? (a) 2.84 (b) 284 (c) 0.284 (d) 28.4
29. 29.0.59 × 3.2 — where does the decimal point go? (a) 1.888 (b) 0.1888 (c) 0.01888 (d) 18.88
30. 30.8.6 × 0.2 — where does the decimal point go? (a) 17.2 (b) 1.72 (c) 0.0172 (d) 0.172
31. 31.0.38 × 3.1 — where does the decimal point go? (a) 0.1178 (b) 0.01178 (c) 11.78 (d) 1.178
32. 32.1.2 × 0.7 — where does the decimal point go? (a) 0.084 (b) 0.84 (c) 0.0084 (d) 8.4
33. 33.0.83 × 14 — where does the decimal point go? (a) 116.2 (b) 0.1162 (c) 11.62 (d) 1.162
34. 34.0.93 × 4.2 — where does the decimal point go? (a) 39.06 (b) 3.906 (c) 0.3906 (d) 0.03906
35. 35.0.57 × 4 — where does the decimal point go? (a) 0.228 (b) 2.28 (c) 22.8 (d) 0.0228
36. 36.0.41 × 8 — where does the decimal point go? (a) 3.28 (b) 0.328 (c) 0.0328 (d) 32.8
37. 37.0.67 × 2.5 — where does the decimal point go? (a) 0.01675 (b) 0.1675 (c) 16.75 (d) 1.675
38. 38.0.37 × 7 — where does the decimal point go? (a) 25.9 (b) 2.59 (c) 0.259 (d) 0.0259
39. 39.7.8 × 4.7 — where does the decimal point go? (a) 36.66 (b) 0.3666 (c) 3.666 (d) 366.6
40. 40.4.6 × 0.4 — where does the decimal point go? (a) 0.0184 (b) 0.184 (c) 1.84 (d) 18.4

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