Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 608 · 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. 1.5.3 × 3.3 — where does the decimal point go? (a) 1.749 (b) 0.1749 (c) 174.9 (d) 17.49
2. 2.7.7 × 41 — where does the decimal point go? (a) 315.7 (b) 3.157 (c) 3157 (d) 31.57
3. 3.1.6 × 9 — where does the decimal point go? (a) 0.144 (b) 1.44 (c) 144 (d) 14.4
4. 4.0.73 × 3 — where does the decimal point go? (a) 21.9 (b) 0.219 (c) 2.19 (d) 0.0219
5. 5.0.47 × 8 — where does the decimal point go? (a) 0.0376 (b) 0.376 (c) 3.76 (d) 37.6
6. 6.3.8 × 7 — where does the decimal point go? (a) 26.6 (b) 266 (c) 0.266 (d) 2.66
7. 7.8.1 × 16 — where does the decimal point go? (a) 12.96 (b) 1.296 (c) 129.6 (d) 1296
8. 8.9.7 × 4 — where does the decimal point go? (a) 388 (b) 0.388 (c) 38.8 (d) 3.88
9. 9.0.25 × 0.7 — where does the decimal point go? (a) 0.00175 (b) 1.75 (c) 0.175 (d) 0.0175
10. 10.0.25 × 0.5 — where does the decimal point go? (a) 0.00125 (b) 0.125 (c) 0.0125 (d) 1.25
11. 11.0.28 × 0.2 — where does the decimal point go? (a) 0.56 (b) 0.056 (c) 0.00056 (d) 0.0056
12. 12.3.1 × 0.7 — where does the decimal point go? (a) 0.0217 (b) 21.7 (c) 0.217 (d) 2.17
13. 13.0.16 × 0.9 — where does the decimal point go? (a) 0.00144 (b) 1.44 (c) 0.144 (d) 0.0144
14. 14.2.7 × 2 — where does the decimal point go? (a) 0.54 (b) 5.4 (c) 54 (d) 0.054
15. 15.6.4 × 0.9 — where does the decimal point go? (a) 0.576 (b) 5.76 (c) 57.6 (d) 0.0576
16. 16.3.4 × 4.9 — where does the decimal point go? (a) 16.66 (b) 1.666 (c) 0.1666 (d) 166.6
17. 17.8.7 × 12 — where does the decimal point go? (a) 1.044 (b) 104.4 (c) 1044 (d) 10.44
18. 18.0.61 × 3.8 — where does the decimal point go? (a) 0.02318 (b) 0.2318 (c) 23.18 (d) 2.318
19. 19.3.6 × 2 — where does the decimal point go? (a) 7.2 (b) 0.072 (c) 72 (d) 0.72
20. 20.8.3 × 4 — where does the decimal point go? (a) 33.2 (b) 332 (c) 0.332 (d) 3.32
21. 21.0.72 × 1.4 — where does the decimal point go? (a) 1.008 (b) 0.01008 (c) 0.1008 (d) 10.08
22. 22.9.4 × 3.1 — where does the decimal point go? (a) 291.4 (b) 0.2914 (c) 2.914 (d) 29.14
23. 23.0.88 × 3.8 — where does the decimal point go? (a) 0.3344 (b) 0.03344 (c) 33.44 (d) 3.344
24. 24.0.82 × 0.8 — where does the decimal point go? (a) 0.656 (b) 6.56 (c) 0.00656 (d) 0.0656
25. 25.4.2 × 23 — where does the decimal point go? (a) 9.66 (b) 0.966 (c) 96.6 (d) 966
26. 26.3.4 × 6 — where does the decimal point go? (a) 2.04 (b) 0.204 (c) 204 (d) 20.4
27. 27.0.15 × 3.7 — where does the decimal point go? (a) 0.555 (b) 0.0555 (c) 5.55 (d) 0.00555
28. 28.8.6 × 0.4 — where does the decimal point go? (a) 3.44 (b) 0.0344 (c) 34.4 (d) 0.344
29. 29.2.9 × 7 — where does the decimal point go? (a) 0.203 (b) 20.3 (c) 203 (d) 2.03
30. 30.0.38 × 32 — where does the decimal point go? (a) 12.16 (b) 1.216 (c) 0.1216 (d) 121.6
31. 31.0.31 × 7 — where does the decimal point go? (a) 0.0217 (b) 21.7 (c) 0.217 (d) 2.17
32. 32.7.8 × 2.7 — where does the decimal point go? (a) 0.2106 (b) 21.06 (c) 210.6 (d) 2.106
33. 33.3.4 × 0.3 — where does the decimal point go? (a) 0.0102 (b) 1.02 (c) 0.102 (d) 10.2
34. 34.1.3 × 8 — where does the decimal point go? (a) 0.104 (b) 104 (c) 1.04 (d) 10.4
35. 35.8.2 × 6 — where does the decimal point go? (a) 0.492 (b) 492 (c) 4.92 (d) 49.2
36. 36.0.48 × 0.4 — where does the decimal point go? (a) 0.00192 (b) 1.92 (c) 0.192 (d) 0.0192
37. 37.7.6 × 0.3 — where does the decimal point go? (a) 2.28 (b) 0.228 (c) 0.0228 (d) 22.8
38. 38.0.31 × 8 — where does the decimal point go? (a) 2.48 (b) 24.8 (c) 0.0248 (d) 0.248
39. 39.0.29 × 0.4 — where does the decimal point go? (a) 0.00116 (b) 1.16 (c) 0.0116 (d) 0.116
40. 40.2.6 × 43 — where does the decimal point go? (a) 111.8 (b) 11.18 (c) 1118 (d) 1.118

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