Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 36 · 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. 1.2.4 × 0.7 — where does the decimal point go? (a) 0.168 (b) 0.0168 (c) 16.8 (d) 1.68
2. 2.0.27 × 0.2 — where does the decimal point go? (a) 0.054 (b) 0.00054 (c) 0.54 (d) 0.0054
3. 3.3.8 × 0.4 — where does the decimal point go? (a) 0.152 (b) 0.0152 (c) 1.52 (d) 15.2
4. 4.5.1 × 4 — where does the decimal point go? (a) 204 (b) 0.204 (c) 20.4 (d) 2.04
5. 5.8.7 × 2.5 — where does the decimal point go? (a) 0.2175 (b) 217.5 (c) 21.75 (d) 2.175
6. 6.1.3 × 2 — where does the decimal point go? (a) 2.6 (b) 0.026 (c) 0.26 (d) 26
7. 7.0.74 × 1.8 — where does the decimal point go? (a) 1.332 (b) 13.32 (c) 0.1332 (d) 0.01332
8. 8.8.3 × 0.9 — where does the decimal point go? (a) 0.747 (b) 7.47 (c) 0.0747 (d) 74.7
9. 9.0.42 × 4.2 — where does the decimal point go? (a) 0.1764 (b) 0.01764 (c) 1.764 (d) 17.64
10. 10.5.1 × 3.8 — where does the decimal point go? (a) 193.8 (b) 0.1938 (c) 1.938 (d) 19.38
11. 11.0.19 × 17 — where does the decimal point go? (a) 32.3 (b) 0.323 (c) 3.23 (d) 0.0323
12. 12.0.78 × 37 — where does the decimal point go? (a) 288.6 (b) 2.886 (c) 28.86 (d) 0.2886
13. 13.0.47 × 9 — where does the decimal point go? (a) 42.3 (b) 0.0423 (c) 0.423 (d) 4.23
14. 14.0.34 × 28 — where does the decimal point go? (a) 0.952 (b) 0.0952 (c) 95.2 (d) 9.52
15. 15.0.51 × 4.9 — where does the decimal point go? (a) 2.499 (b) 0.02499 (c) 24.99 (d) 0.2499
16. 16.1.2 × 2.4 — where does the decimal point go? (a) 0.0288 (b) 0.288 (c) 2.88 (d) 28.8
17. 17.2.9 × 7 — where does the decimal point go? (a) 20.3 (b) 2.03 (c) 0.203 (d) 203
18. 18.9.7 × 2.9 — where does the decimal point go? (a) 281.3 (b) 2.813 (c) 28.13 (d) 0.2813
19. 19.0.81 × 11 — where does the decimal point go? (a) 8.91 (b) 89.1 (c) 0.0891 (d) 0.891
20. 20.0.48 × 3.7 — where does the decimal point go? (a) 1.776 (b) 0.01776 (c) 17.76 (d) 0.1776
21. 21.0.44 × 7 — where does the decimal point go? (a) 3.08 (b) 30.8 (c) 0.308 (d) 0.0308
22. 22.4.9 × 0.9 — where does the decimal point go? (a) 4.41 (b) 44.1 (c) 0.0441 (d) 0.441
23. 23.2.6 × 27 — where does the decimal point go? (a) 70.2 (b) 702 (c) 0.702 (d) 7.02
24. 24.8.9 × 38 — where does the decimal point go? (a) 3382 (b) 338.2 (c) 3.382 (d) 33.82
25. 25.3.7 × 3.9 — where does the decimal point go? (a) 14.43 (b) 1.443 (c) 144.3 (d) 0.1443
26. 26.5.2 × 39 — where does the decimal point go? (a) 202.8 (b) 2.028 (c) 2028 (d) 20.28
27. 27.0.91 × 0.6 — where does the decimal point go? (a) 0.546 (b) 5.46 (c) 0.0546 (d) 0.00546
28. 28.1.7 × 2 — where does the decimal point go? (a) 0.34 (b) 0.034 (c) 34 (d) 3.4
29. 29.0.96 × 0.4 — where does the decimal point go? (a) 3.84 (b) 0.0384 (c) 0.00384 (d) 0.384
30. 30.0.65 × 0.7 — where does the decimal point go? (a) 0.00455 (b) 0.0455 (c) 0.455 (d) 4.55
31. 31.6.8 × 3.3 — where does the decimal point go? (a) 0.2244 (b) 2.244 (c) 22.44 (d) 224.4
32. 32.4.2 × 4.8 — where does the decimal point go? (a) 20.16 (b) 2.016 (c) 0.2016 (d) 201.6
33. 33.8.5 × 0.9 — where does the decimal point go? (a) 7.65 (b) 0.765 (c) 0.0765 (d) 76.5
34. 34.0.41 × 1.9 — where does the decimal point go? (a) 0.00779 (b) 0.779 (c) 7.79 (d) 0.0779
35. 35.3.9 × 0.3 — where does the decimal point go? (a) 1.17 (b) 0.0117 (c) 0.117 (d) 11.7
36. 36.0.59 × 2 — where does the decimal point go? (a) 0.118 (b) 1.18 (c) 0.0118 (d) 11.8
37. 37.0.43 × 0.8 — where does the decimal point go? (a) 0.00344 (b) 0.0344 (c) 3.44 (d) 0.344
38. 38.0.15 × 0.3 — where does the decimal point go? (a) 0.0045 (b) 0.045 (c) 0.00045 (d) 0.45
39. 39.1.8 × 3 — where does the decimal point go? (a) 5.4 (b) 0.54 (c) 0.054 (d) 54
40. 40.0.41 × 0.3 — where does the decimal point go? (a) 0.0123 (b) 1.23 (c) 0.123 (d) 0.00123

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