Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 770 · 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. 1.0.46 × 9 — where does the decimal point go? (a) 41.4 (b) 4.14 (c) 0.0414 (d) 0.414
2. 2.0.54 × 3 — where does the decimal point go? (a) 1.62 (b) 0.0162 (c) 16.2 (d) 0.162
3. 3.0.31 × 27 — where does the decimal point go? (a) 8.37 (b) 0.0837 (c) 0.837 (d) 83.7
4. 4.5.7 × 27 — where does the decimal point go? (a) 153.9 (b) 1539 (c) 15.39 (d) 1.539
5. 5.0.93 × 17 — where does the decimal point go? (a) 1.581 (b) 0.1581 (c) 158.1 (d) 15.81
6. 6.6.3 × 0.2 — where does the decimal point go? (a) 1.26 (b) 0.0126 (c) 0.126 (d) 12.6
7. 7.9.5 × 1.5 — where does the decimal point go? (a) 0.1425 (b) 142.5 (c) 1.425 (d) 14.25
8. 8.8.8 × 33 — where does the decimal point go? (a) 29.04 (b) 2904 (c) 2.904 (d) 290.4
9. 9.5.8 × 27 — where does the decimal point go? (a) 156.6 (b) 1566 (c) 1.566 (d) 15.66
10. 10.9.3 × 3 — where does the decimal point go? (a) 279 (b) 0.279 (c) 27.9 (d) 2.79
11. 11.0.98 × 0.2 — where does the decimal point go? (a) 0.196 (b) 0.00196 (c) 1.96 (d) 0.0196
12. 12.4.7 × 2.2 — where does the decimal point go? (a) 1.034 (b) 103.4 (c) 10.34 (d) 0.1034
13. 13.1.3 × 9 — where does the decimal point go? (a) 11.7 (b) 0.117 (c) 1.17 (d) 117
14. 14.6.4 × 33 — where does the decimal point go? (a) 2112 (b) 2.112 (c) 21.12 (d) 211.2
15. 15.4.3 × 0.8 — where does the decimal point go? (a) 3.44 (b) 34.4 (c) 0.0344 (d) 0.344
16. 16.2.9 × 7 — where does the decimal point go? (a) 20.3 (b) 2.03 (c) 203 (d) 0.203
17. 17.2.3 × 0.6 — where does the decimal point go? (a) 1.38 (b) 0.138 (c) 0.0138 (d) 13.8
18. 18.0.63 × 2.5 — where does the decimal point go? (a) 1.575 (b) 0.1575 (c) 0.01575 (d) 15.75
19. 19.8.2 × 7 — where does the decimal point go? (a) 0.574 (b) 5.74 (c) 574 (d) 57.4
20. 20.0.18 × 36 — where does the decimal point go? (a) 0.0648 (b) 0.648 (c) 64.8 (d) 6.48
21. 21.0.34 × 2 — where does the decimal point go? (a) 0.068 (b) 0.0068 (c) 6.8 (d) 0.68
22. 22.9.3 × 0.9 — where does the decimal point go? (a) 8.37 (b) 0.0837 (c) 83.7 (d) 0.837
23. 23.6.6 × 4 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 264 (d) 26.4
24. 24.3.3 × 14 — where does the decimal point go? (a) 0.462 (b) 46.2 (c) 462 (d) 4.62
25. 25.2.7 × 9 — where does the decimal point go? (a) 2.43 (b) 0.243 (c) 243 (d) 24.3
26. 26.0.51 × 17 — where does the decimal point go? (a) 8.67 (b) 0.0867 (c) 86.7 (d) 0.867
27. 27.0.31 × 0.6 — where does the decimal point go? (a) 1.86 (b) 0.0186 (c) 0.186 (d) 0.00186
28. 28.0.22 × 3 — where does the decimal point go? (a) 0.066 (b) 0.66 (c) 0.0066 (d) 6.6
29. 29.2.8 × 0.3 — where does the decimal point go? (a) 0.0084 (b) 8.4 (c) 0.84 (d) 0.084
30. 30.9.4 × 6 — where does the decimal point go? (a) 5.64 (b) 0.564 (c) 56.4 (d) 564
31. 31.4.9 × 5 — where does the decimal point go? (a) 0.245 (b) 245 (c) 24.5 (d) 2.45
32. 32.9.1 × 3 — where does the decimal point go? (a) 0.273 (b) 273 (c) 27.3 (d) 2.73
33. 33.0.41 × 0.6 — where does the decimal point go? (a) 0.0246 (b) 0.00246 (c) 0.246 (d) 2.46
34. 34.7.7 × 7 — where does the decimal point go? (a) 0.539 (b) 53.9 (c) 5.39 (d) 539
35. 35.5.1 × 0.9 — where does the decimal point go? (a) 0.459 (b) 4.59 (c) 45.9 (d) 0.0459
36. 36.6.7 × 15 — where does the decimal point go? (a) 1005 (b) 100.5 (c) 10.05 (d) 1.005
37. 37.7.4 × 9 — where does the decimal point go? (a) 66.6 (b) 6.66 (c) 666 (d) 0.666
38. 38.2.1 × 36 — where does the decimal point go? (a) 756 (b) 7.56 (c) 0.756 (d) 75.6
39. 39.0.47 × 1.6 — where does the decimal point go? (a) 0.0752 (b) 0.752 (c) 7.52 (d) 0.00752
40. 40.1.4 × 44 — where does the decimal point go? (a) 61.6 (b) 616 (c) 6.16 (d) 0.616

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