Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 662 · 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. 1.8.9 × 4 — where does the decimal point go? (a) 356 (b) 3.56 (c) 0.356 (d) 35.6
2. 2.8.3 × 35 — where does the decimal point go? (a) 29.05 (b) 2905 (c) 290.5 (d) 2.905
3. 3.2.2 × 8 — where does the decimal point go? (a) 17.6 (b) 1.76 (c) 0.176 (d) 176
4. 4.0.21 × 5 — where does the decimal point go? (a) 10.5 (b) 1.05 (c) 0.105 (d) 0.0105
5. 5.0.48 × 2.4 — where does the decimal point go? (a) 11.52 (b) 0.01152 (c) 1.152 (d) 0.1152
6. 6.6.5 × 17 — where does the decimal point go? (a) 11.05 (b) 110.5 (c) 1.105 (d) 1105
7. 7.0.25 × 0.3 — where does the decimal point go? (a) 0.0075 (b) 0.075 (c) 0.00075 (d) 0.75
8. 8.2.2 × 2.9 — where does the decimal point go? (a) 0.0638 (b) 0.638 (c) 6.38 (d) 63.8
9. 9.0.71 × 15 — where does the decimal point go? (a) 1.065 (b) 106.5 (c) 0.1065 (d) 10.65
10. 10.0.58 × 0.7 — where does the decimal point go? (a) 0.0406 (b) 0.00406 (c) 0.406 (d) 4.06
11. 11.0.28 × 6 — where does the decimal point go? (a) 16.8 (b) 1.68 (c) 0.168 (d) 0.0168
12. 12.3.8 × 14 — where does the decimal point go? (a) 53.2 (b) 0.532 (c) 532 (d) 5.32
13. 13.6.1 × 4.1 — where does the decimal point go? (a) 250.1 (b) 0.2501 (c) 25.01 (d) 2.501
14. 14.0.58 × 22 — where does the decimal point go? (a) 0.1276 (b) 127.6 (c) 12.76 (d) 1.276
15. 15.0.34 × 0.6 — where does the decimal point go? (a) 0.0204 (b) 2.04 (c) 0.00204 (d) 0.204
16. 16.0.59 × 1.6 — where does the decimal point go? (a) 0.944 (b) 9.44 (c) 0.0944 (d) 0.00944
17. 17.0.73 × 4.8 — where does the decimal point go? (a) 0.3504 (b) 3.504 (c) 0.03504 (d) 35.04
18. 18.3.7 × 4 — where does the decimal point go? (a) 14.8 (b) 0.148 (c) 148 (d) 1.48
19. 19.4.4 × 3.9 — where does the decimal point go? (a) 0.1716 (b) 171.6 (c) 17.16 (d) 1.716
20. 20.0.22 × 4 — where does the decimal point go? (a) 8.8 (b) 0.0088 (c) 0.88 (d) 0.088
21. 21.0.34 × 2.1 — where does the decimal point go? (a) 0.00714 (b) 0.714 (c) 0.0714 (d) 7.14
22. 22.3.1 × 4.1 — where does the decimal point go? (a) 0.1271 (b) 1.271 (c) 12.71 (d) 127.1
23. 23.6.9 × 6 — where does the decimal point go? (a) 0.414 (b) 4.14 (c) 41.4 (d) 414
24. 24.2.8 × 2 — where does the decimal point go? (a) 56 (b) 0.56 (c) 0.056 (d) 5.6
25. 25.0.39 × 3.8 — where does the decimal point go? (a) 1.482 (b) 0.1482 (c) 0.01482 (d) 14.82
26. 26.6.2 × 7 — where does the decimal point go? (a) 43.4 (b) 0.434 (c) 4.34 (d) 434
27. 27.7.9 × 13 — where does the decimal point go? (a) 10.27 (b) 1027 (c) 1.027 (d) 102.7
28. 28.9.5 × 5 — where does the decimal point go? (a) 47.5 (b) 4.75 (c) 0.475 (d) 475
29. 29.3.9 × 4.2 — where does the decimal point go? (a) 16.38 (b) 163.8 (c) 1.638 (d) 0.1638
30. 30.0.28 × 27 — where does the decimal point go? (a) 0.756 (b) 0.0756 (c) 75.6 (d) 7.56
31. 31.0.95 × 47 — where does the decimal point go? (a) 0.4465 (b) 446.5 (c) 4.465 (d) 44.65
32. 32.5.4 × 4.4 — where does the decimal point go? (a) 23.76 (b) 2.376 (c) 0.2376 (d) 237.6
33. 33.7.1 × 35 — where does the decimal point go? (a) 2.485 (b) 2485 (c) 248.5 (d) 24.85
34. 34.5.8 × 2.2 — where does the decimal point go? (a) 1.276 (b) 12.76 (c) 0.1276 (d) 127.6
35. 35.6.4 × 6 — where does the decimal point go? (a) 3.84 (b) 38.4 (c) 384 (d) 0.384
36. 36.0.39 × 0.9 — where does the decimal point go? (a) 0.00351 (b) 0.0351 (c) 3.51 (d) 0.351
37. 37.2.5 × 3 — where does the decimal point go? (a) 0.075 (b) 75 (c) 0.75 (d) 7.5
38. 38.1.7 × 3.4 — where does the decimal point go? (a) 5.78 (b) 57.8 (c) 0.578 (d) 0.0578
39. 39.8.8 × 0.2 — where does the decimal point go? (a) 0.0176 (b) 0.176 (c) 1.76 (d) 17.6
40. 40.0.89 × 3.6 — where does the decimal point go? (a) 3.204 (b) 32.04 (c) 0.03204 (d) 0.3204

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