Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 460 · 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. 1.0.71 × 2.4 — where does the decimal point go? (a) 0.01704 (b) 1.704 (c) 0.1704 (d) 17.04
2. 2.9.1 × 6 — where does the decimal point go? (a) 0.546 (b) 5.46 (c) 54.6 (d) 546
3. 3.0.95 × 31 — where does the decimal point go? (a) 294.5 (b) 2.945 (c) 29.45 (d) 0.2945
4. 4.9.8 × 38 — where does the decimal point go? (a) 3.724 (b) 372.4 (c) 37.24 (d) 3724
5. 5.0.43 × 0.7 — where does the decimal point go? (a) 0.0301 (b) 0.301 (c) 0.00301 (d) 3.01
6. 6.5.8 × 9 — where does the decimal point go? (a) 522 (b) 0.522 (c) 5.22 (d) 52.2
7. 7.9.1 × 0.4 — where does the decimal point go? (a) 36.4 (b) 0.0364 (c) 3.64 (d) 0.364
8. 8.9.1 × 18 — where does the decimal point go? (a) 1.638 (b) 16.38 (c) 163.8 (d) 1638
9. 9.9.4 × 0.8 — where does the decimal point go? (a) 7.52 (b) 75.2 (c) 0.0752 (d) 0.752
10. 10.0.21 × 2.2 — where does the decimal point go? (a) 0.462 (b) 0.0462 (c) 0.00462 (d) 4.62
11. 11.0.65 × 11 — where does the decimal point go? (a) 0.0715 (b) 71.5 (c) 0.715 (d) 7.15
12. 12.6.8 × 41 — where does the decimal point go? (a) 27.88 (b) 2.788 (c) 278.8 (d) 2788
13. 13.0.14 × 0.4 — where does the decimal point go? (a) 0.00056 (b) 0.0056 (c) 0.56 (d) 0.056
14. 14.9.5 × 0.3 — where does the decimal point go? (a) 2.85 (b) 0.285 (c) 28.5 (d) 0.0285
15. 15.1.2 × 3.9 — where does the decimal point go? (a) 46.8 (b) 0.468 (c) 0.0468 (d) 4.68
16. 16.8.3 × 1.6 — where does the decimal point go? (a) 132.8 (b) 1.328 (c) 13.28 (d) 0.1328
17. 17.0.47 × 9 — where does the decimal point go? (a) 0.423 (b) 4.23 (c) 0.0423 (d) 42.3
18. 18.0.44 × 3.8 — where does the decimal point go? (a) 1.672 (b) 16.72 (c) 0.01672 (d) 0.1672
19. 19.0.55 × 15 — where does the decimal point go? (a) 8.25 (b) 0.825 (c) 82.5 (d) 0.0825
20. 20.0.46 × 3 — where does the decimal point go? (a) 0.0138 (b) 1.38 (c) 13.8 (d) 0.138
21. 21.0.85 × 5 — where does the decimal point go? (a) 42.5 (b) 4.25 (c) 0.0425 (d) 0.425
22. 22.2.4 × 3 — where does the decimal point go? (a) 72 (b) 0.072 (c) 0.72 (d) 7.2
23. 23.0.51 × 3.3 — where does the decimal point go? (a) 16.83 (b) 1.683 (c) 0.01683 (d) 0.1683
24. 24.0.12 × 9 — where does the decimal point go? (a) 0.0108 (b) 1.08 (c) 0.108 (d) 10.8
25. 25.0.63 × 0.9 — where does the decimal point go? (a) 5.67 (b) 0.567 (c) 0.0567 (d) 0.00567
26. 26.8.2 × 14 — where does the decimal point go? (a) 1148 (b) 1.148 (c) 114.8 (d) 11.48
27. 27.0.47 × 3.7 — where does the decimal point go? (a) 1.739 (b) 0.1739 (c) 0.01739 (d) 17.39
28. 28.6.3 × 8 — where does the decimal point go? (a) 50.4 (b) 5.04 (c) 504 (d) 0.504
29. 29.0.16 × 2.7 — where does the decimal point go? (a) 0.432 (b) 0.0432 (c) 0.00432 (d) 4.32
30. 30.2.7 × 2.1 — where does the decimal point go? (a) 0.567 (b) 0.0567 (c) 5.67 (d) 56.7
31. 31.1.9 × 0.4 — where does the decimal point go? (a) 0.076 (b) 0.0076 (c) 7.6 (d) 0.76
32. 32.0.63 × 2 — where does the decimal point go? (a) 0.126 (b) 12.6 (c) 0.0126 (d) 1.26
33. 33.0.19 × 3 — where does the decimal point go? (a) 0.57 (b) 5.7 (c) 0.057 (d) 0.0057
34. 34.0.31 × 6 — where does the decimal point go? (a) 18.6 (b) 0.0186 (c) 1.86 (d) 0.186
35. 35.0.68 × 26 — where does the decimal point go? (a) 1.768 (b) 0.1768 (c) 176.8 (d) 17.68
36. 36.9.7 × 0.6 — where does the decimal point go? (a) 0.0582 (b) 58.2 (c) 0.582 (d) 5.82
37. 37.0.17 × 0.6 — where does the decimal point go? (a) 0.00102 (b) 0.0102 (c) 0.102 (d) 1.02
38. 38.0.74 × 4.2 — where does the decimal point go? (a) 0.3108 (b) 3.108 (c) 0.03108 (d) 31.08
39. 39.6.4 × 0.9 — where does the decimal point go? (a) 0.576 (b) 57.6 (c) 0.0576 (d) 5.76
40. 40.0.34 × 0.6 — where does the decimal point go? (a) 0.00204 (b) 2.04 (c) 0.0204 (d) 0.204

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