Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 105 · 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. 1.6.7 × 0.2 — where does the decimal point go? (a) 13.4 (b) 0.134 (c) 1.34 (d) 0.0134
2. 2.0.31 × 0.6 — where does the decimal point go? (a) 0.0186 (b) 1.86 (c) 0.186 (d) 0.00186
3. 3.0.46 × 23 — where does the decimal point go? (a) 10.58 (b) 105.8 (c) 0.1058 (d) 1.058
4. 4.0.91 × 4 — where does the decimal point go? (a) 36.4 (b) 3.64 (c) 0.364 (d) 0.0364
5. 5.0.26 × 0.6 — where does the decimal point go? (a) 0.156 (b) 1.56 (c) 0.00156 (d) 0.0156
6. 6.0.25 × 47 — where does the decimal point go? (a) 117.5 (b) 1.175 (c) 0.1175 (d) 11.75
7. 7.6.5 × 21 — where does the decimal point go? (a) 1.365 (b) 13.65 (c) 1365 (d) 136.5
8. 8.1.8 × 0.6 — where does the decimal point go? (a) 0.108 (b) 10.8 (c) 0.0108 (d) 1.08
9. 9.9.2 × 7 — where does the decimal point go? (a) 64.4 (b) 6.44 (c) 644 (d) 0.644
10. 10.2.1 × 29 — where does the decimal point go? (a) 60.9 (b) 609 (c) 0.609 (d) 6.09
11. 11.0.17 × 0.5 — where does the decimal point go? (a) 0.00085 (b) 0.0085 (c) 0.85 (d) 0.085
12. 12.6.2 × 0.2 — where does the decimal point go? (a) 0.124 (b) 0.0124 (c) 1.24 (d) 12.4
13. 13.0.33 × 0.3 — where does the decimal point go? (a) 0.0099 (b) 0.099 (c) 0.99 (d) 0.00099
14. 14.0.63 × 17 — where does the decimal point go? (a) 1.071 (b) 107.1 (c) 0.1071 (d) 10.71
15. 15.0.47 × 0.2 — where does the decimal point go? (a) 0.094 (b) 0.00094 (c) 0.0094 (d) 0.94
16. 16.9.2 × 4 — where does the decimal point go? (a) 36.8 (b) 3.68 (c) 368 (d) 0.368
17. 17.0.98 × 0.8 — where does the decimal point go? (a) 0.784 (b) 0.00784 (c) 0.0784 (d) 7.84
18. 18.0.71 × 2.7 — where does the decimal point go? (a) 0.1917 (b) 0.01917 (c) 19.17 (d) 1.917
19. 19.0.87 × 9 — where does the decimal point go? (a) 78.3 (b) 0.0783 (c) 7.83 (d) 0.783
20. 20.0.73 × 44 — where does the decimal point go? (a) 32.12 (b) 0.3212 (c) 3.212 (d) 321.2
21. 21.0.97 × 3.8 — where does the decimal point go? (a) 0.03686 (b) 3.686 (c) 0.3686 (d) 36.86
22. 22.8.2 × 0.4 — where does the decimal point go? (a) 3.28 (b) 0.0328 (c) 0.328 (d) 32.8
23. 23.7.5 × 1.3 — where does the decimal point go? (a) 0.0975 (b) 9.75 (c) 97.5 (d) 0.975
24. 24.5.4 × 33 — where does the decimal point go? (a) 178.2 (b) 1782 (c) 1.782 (d) 17.82
25. 25.6.2 × 7 — where does the decimal point go? (a) 434 (b) 0.434 (c) 43.4 (d) 4.34
26. 26.0.44 × 2 — where does the decimal point go? (a) 0.0088 (b) 8.8 (c) 0.88 (d) 0.088
27. 27.5.6 × 3 — where does the decimal point go? (a) 0.168 (b) 168 (c) 16.8 (d) 1.68
28. 28.2.1 × 7 — where does the decimal point go? (a) 14.7 (b) 0.147 (c) 147 (d) 1.47
29. 29.6.9 × 1.8 — where does the decimal point go? (a) 12.42 (b) 124.2 (c) 0.1242 (d) 1.242
30. 30.0.96 × 2 — where does the decimal point go? (a) 0.0192 (b) 1.92 (c) 19.2 (d) 0.192
31. 31.0.78 × 1.6 — where does the decimal point go? (a) 0.01248 (b) 0.1248 (c) 12.48 (d) 1.248
32. 32.0.15 × 0.7 — where does the decimal point go? (a) 0.0105 (b) 0.00105 (c) 0.105 (d) 1.05
33. 33.0.77 × 44 — where does the decimal point go? (a) 338.8 (b) 0.3388 (c) 3.388 (d) 33.88
34. 34.4.7 × 0.7 — where does the decimal point go? (a) 3.29 (b) 0.0329 (c) 0.329 (d) 32.9
35. 35.0.73 × 28 — where does the decimal point go? (a) 2.044 (b) 0.2044 (c) 20.44 (d) 204.4
36. 36.0.54 × 2.3 — where does the decimal point go? (a) 0.01242 (b) 0.1242 (c) 1.242 (d) 12.42
37. 37.7.4 × 3.7 — where does the decimal point go? (a) 273.8 (b) 27.38 (c) 2.738 (d) 0.2738
38. 38.0.62 × 12 — where does the decimal point go? (a) 74.4 (b) 7.44 (c) 0.744 (d) 0.0744
39. 39.8.9 × 0.8 — where does the decimal point go? (a) 7.12 (b) 0.712 (c) 0.0712 (d) 71.2
40. 40.7.2 × 6 — where does the decimal point go? (a) 0.432 (b) 43.2 (c) 432 (d) 4.32

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