Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 871 · 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. 1.6.3 × 8 — where does the decimal point go? (a) 504 (b) 0.504 (c) 5.04 (d) 50.4
2. 2.0.43 × 2 — where does the decimal point go? (a) 0.86 (b) 0.0086 (c) 8.6 (d) 0.086
3. 3.7.1 × 1.9 — where does the decimal point go? (a) 134.9 (b) 1.349 (c) 13.49 (d) 0.1349
4. 4.4.6 × 0.6 — where does the decimal point go? (a) 0.0276 (b) 0.276 (c) 2.76 (d) 27.6
5. 5.0.53 × 19 — where does the decimal point go? (a) 0.1007 (b) 1.007 (c) 100.7 (d) 10.07
6. 6.7.9 × 2.1 — where does the decimal point go? (a) 1.659 (b) 165.9 (c) 0.1659 (d) 16.59
7. 7.0.26 × 38 — where does the decimal point go? (a) 98.8 (b) 0.988 (c) 0.0988 (d) 9.88
8. 8.7.3 × 13 — where does the decimal point go? (a) 94.9 (b) 0.949 (c) 9.49 (d) 949
9. 9.4.2 × 43 — where does the decimal point go? (a) 180.6 (b) 1.806 (c) 18.06 (d) 1806
10. 10.0.45 × 3 — where does the decimal point go? (a) 1.35 (b) 0.135 (c) 13.5 (d) 0.0135
11. 11.2.7 × 5 — where does the decimal point go? (a) 1.35 (b) 13.5 (c) 135 (d) 0.135
12. 12.7.3 × 31 — where does the decimal point go? (a) 2.263 (b) 2263 (c) 226.3 (d) 22.63
13. 13.0.95 × 0.3 — where does the decimal point go? (a) 0.285 (b) 0.00285 (c) 2.85 (d) 0.0285
14. 14.0.54 × 0.3 — where does the decimal point go? (a) 0.162 (b) 1.62 (c) 0.00162 (d) 0.0162
15. 15.8.2 × 0.8 — where does the decimal point go? (a) 0.0656 (b) 0.656 (c) 65.6 (d) 6.56
16. 16.9.2 × 3 — where does the decimal point go? (a) 2.76 (b) 27.6 (c) 0.276 (d) 276
17. 17.5.5 × 47 — where does the decimal point go? (a) 2.585 (b) 258.5 (c) 25.85 (d) 2585
18. 18.4.6 × 4.7 — where does the decimal point go? (a) 2.162 (b) 21.62 (c) 0.2162 (d) 216.2
19. 19.0.66 × 1.7 — where does the decimal point go? (a) 11.22 (b) 0.1122 (c) 0.01122 (d) 1.122
20. 20.8.6 × 3.1 — where does the decimal point go? (a) 266.6 (b) 2.666 (c) 0.2666 (d) 26.66
21. 21.0.96 × 0.9 — where does the decimal point go? (a) 8.64 (b) 0.864 (c) 0.0864 (d) 0.00864
22. 22.4.9 × 1.6 — where does the decimal point go? (a) 7.84 (b) 0.784 (c) 0.0784 (d) 78.4
23. 23.4.7 × 0.7 — where does the decimal point go? (a) 3.29 (b) 0.0329 (c) 0.329 (d) 32.9
24. 24.0.92 × 0.9 — where does the decimal point go? (a) 0.828 (b) 8.28 (c) 0.00828 (d) 0.0828
25. 25.5.3 × 2.1 — where does the decimal point go? (a) 111.3 (b) 1.113 (c) 11.13 (d) 0.1113
26. 26.9.7 × 0.2 — where does the decimal point go? (a) 0.194 (b) 1.94 (c) 0.0194 (d) 19.4
27. 27.3.3 × 3 — where does the decimal point go? (a) 0.099 (b) 9.9 (c) 0.99 (d) 99
28. 28.8.6 × 0.8 — where does the decimal point go? (a) 0.688 (b) 0.0688 (c) 68.8 (d) 6.88
29. 29.5.7 × 47 — where does the decimal point go? (a) 26.79 (b) 2679 (c) 2.679 (d) 267.9
30. 30.4.3 × 2 — where does the decimal point go? (a) 8.6 (b) 0.086 (c) 0.86 (d) 86
31. 31.0.42 × 11 — where does the decimal point go? (a) 0.0462 (b) 4.62 (c) 46.2 (d) 0.462
32. 32.1.9 × 0.2 — where does the decimal point go? (a) 0.038 (b) 0.38 (c) 0.0038 (d) 3.8
33. 33.0.58 × 9 — where does the decimal point go? (a) 0.522 (b) 5.22 (c) 52.2 (d) 0.0522
34. 34.0.58 × 49 — where does the decimal point go? (a) 2.842 (b) 284.2 (c) 28.42 (d) 0.2842
35. 35.0.17 × 0.3 — where does the decimal point go? (a) 0.051 (b) 0.0051 (c) 0.00051 (d) 0.51
36. 36.3.2 × 28 — where does the decimal point go? (a) 8.96 (b) 0.896 (c) 896 (d) 89.6
37. 37.0.91 × 4.1 — where does the decimal point go? (a) 37.31 (b) 3.731 (c) 0.03731 (d) 0.3731
38. 38.5.6 × 4.6 — where does the decimal point go? (a) 2.576 (b) 25.76 (c) 0.2576 (d) 257.6
39. 39.0.89 × 8 — where does the decimal point go? (a) 0.0712 (b) 71.2 (c) 7.12 (d) 0.712
40. 40.6.6 × 6 — where does the decimal point go? (a) 396 (b) 0.396 (c) 3.96 (d) 39.6

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