Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 103 · 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. 1.0.39 × 3 — where does the decimal point go? (a) 11.7 (b) 0.0117 (c) 1.17 (d) 0.117
2. 2.0.67 × 3 — where does the decimal point go? (a) 0.0201 (b) 0.201 (c) 20.1 (d) 2.01
3. 3.4.9 × 4.4 — where does the decimal point go? (a) 2.156 (b) 21.56 (c) 0.2156 (d) 215.6
4. 4.0.29 × 4 — where does the decimal point go? (a) 1.16 (b) 11.6 (c) 0.116 (d) 0.0116
5. 5.8.3 × 39 — where does the decimal point go? (a) 3.237 (b) 32.37 (c) 3237 (d) 323.7
6. 6.2.5 × 2.1 — where does the decimal point go? (a) 5.25 (b) 0.525 (c) 52.5 (d) 0.0525
7. 7.0.99 × 2.7 — where does the decimal point go? (a) 0.02673 (b) 26.73 (c) 0.2673 (d) 2.673
8. 8.1.7 × 6 — where does the decimal point go? (a) 102 (b) 10.2 (c) 0.102 (d) 1.02
9. 9.0.21 × 42 — where does the decimal point go? (a) 88.2 (b) 8.82 (c) 0.0882 (d) 0.882
10. 10.0.23 × 19 — where does the decimal point go? (a) 0.0437 (b) 0.437 (c) 4.37 (d) 43.7
11. 11.0.61 × 2 — where does the decimal point go? (a) 1.22 (b) 0.0122 (c) 0.122 (d) 12.2
12. 12.0.23 × 4 — where does the decimal point go? (a) 0.0092 (b) 0.92 (c) 0.092 (d) 9.2
13. 13.7.8 × 1.2 — where does the decimal point go? (a) 0.0936 (b) 0.936 (c) 93.6 (d) 9.36
14. 14.0.22 × 6 — where does the decimal point go? (a) 13.2 (b) 0.0132 (c) 0.132 (d) 1.32
15. 15.2.2 × 8 — where does the decimal point go? (a) 1.76 (b) 17.6 (c) 176 (d) 0.176
16. 16.0.94 × 3 — where does the decimal point go? (a) 28.2 (b) 2.82 (c) 0.0282 (d) 0.282
17. 17.9.3 × 4.3 — where does the decimal point go? (a) 39.99 (b) 399.9 (c) 0.3999 (d) 3.999
18. 18.0.27 × 23 — where does the decimal point go? (a) 6.21 (b) 0.621 (c) 0.0621 (d) 62.1
19. 19.0.97 × 11 — where does the decimal point go? (a) 0.1067 (b) 10.67 (c) 1.067 (d) 106.7
20. 20.9.3 × 24 — where does the decimal point go? (a) 2232 (b) 22.32 (c) 2.232 (d) 223.2
21. 21.4.4 × 23 — where does the decimal point go? (a) 1.012 (b) 1012 (c) 10.12 (d) 101.2
22. 22.0.71 × 3.7 — where does the decimal point go? (a) 0.2627 (b) 26.27 (c) 0.02627 (d) 2.627
23. 23.0.46 × 9 — where does the decimal point go? (a) 0.414 (b) 4.14 (c) 0.0414 (d) 41.4
24. 24.0.96 × 8 — where does the decimal point go? (a) 7.68 (b) 0.0768 (c) 76.8 (d) 0.768
25. 25.0.52 × 2.3 — where does the decimal point go? (a) 11.96 (b) 1.196 (c) 0.01196 (d) 0.1196
26. 26.0.66 × 34 — where does the decimal point go? (a) 22.44 (b) 2.244 (c) 0.2244 (d) 224.4
27. 27.1.9 × 0.4 — where does the decimal point go? (a) 0.076 (b) 7.6 (c) 0.76 (d) 0.0076
28. 28.2.7 × 42 — where does the decimal point go? (a) 113.4 (b) 1.134 (c) 1134 (d) 11.34
29. 29.3.1 × 3 — where does the decimal point go? (a) 93 (b) 0.93 (c) 9.3 (d) 0.093
30. 30.5.8 × 0.8 — where does the decimal point go? (a) 0.464 (b) 46.4 (c) 0.0464 (d) 4.64
31. 31.6.8 × 0.3 — where does the decimal point go? (a) 0.204 (b) 20.4 (c) 0.0204 (d) 2.04
32. 32.0.38 × 4.2 — where does the decimal point go? (a) 0.1596 (b) 1.596 (c) 0.01596 (d) 15.96
33. 33.0.94 × 0.8 — where does the decimal point go? (a) 0.00752 (b) 7.52 (c) 0.0752 (d) 0.752
34. 34.0.61 × 0.9 — where does the decimal point go? (a) 0.00549 (b) 5.49 (c) 0.0549 (d) 0.549
35. 35.0.46 × 3.6 — where does the decimal point go? (a) 0.01656 (b) 0.1656 (c) 1.656 (d) 16.56
36. 36.0.19 × 6 — where does the decimal point go? (a) 0.0114 (b) 1.14 (c) 0.114 (d) 11.4
37. 37.0.79 × 44 — where does the decimal point go? (a) 347.6 (b) 3.476 (c) 0.3476 (d) 34.76
38. 38.0.93 × 0.8 — where does the decimal point go? (a) 7.44 (b) 0.0744 (c) 0.744 (d) 0.00744
39. 39.5.9 × 9 — where does the decimal point go? (a) 53.1 (b) 531 (c) 0.531 (d) 5.31
40. 40.0.64 × 0.6 — where does the decimal point go? (a) 0.0384 (b) 0.00384 (c) 0.384 (d) 3.84

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