Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 222 · 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. 1.0.41 × 5 — where does the decimal point go? (a) 2.05 (b) 0.205 (c) 0.0205 (d) 20.5
2. 2.0.29 × 1.9 — where does the decimal point go? (a) 5.51 (b) 0.551 (c) 0.0551 (d) 0.00551
3. 3.0.34 × 2.1 — where does the decimal point go? (a) 0.00714 (b) 0.0714 (c) 0.714 (d) 7.14
4. 4.8.7 × 8 — where does the decimal point go? (a) 69.6 (b) 0.696 (c) 696 (d) 6.96
5. 5.0.99 × 3 — where does the decimal point go? (a) 0.297 (b) 29.7 (c) 0.0297 (d) 2.97
6. 6.0.57 × 23 — where does the decimal point go? (a) 0.1311 (b) 1.311 (c) 131.1 (d) 13.11
7. 7.8.7 × 1.2 — where does the decimal point go? (a) 0.1044 (b) 104.4 (c) 10.44 (d) 1.044
8. 8.0.18 × 44 — where does the decimal point go? (a) 7.92 (b) 0.0792 (c) 79.2 (d) 0.792
9. 9.0.84 × 0.2 — where does the decimal point go? (a) 0.168 (b) 0.0168 (c) 0.00168 (d) 1.68
10. 10.0.77 × 8 — where does the decimal point go? (a) 0.616 (b) 6.16 (c) 0.0616 (d) 61.6
11. 11.0.51 × 2.6 — where does the decimal point go? (a) 13.26 (b) 0.1326 (c) 1.326 (d) 0.01326
12. 12.9.4 × 4 — where does the decimal point go? (a) 3.76 (b) 0.376 (c) 376 (d) 37.6
13. 13.7.6 × 3 — where does the decimal point go? (a) 2.28 (b) 228 (c) 22.8 (d) 0.228
14. 14.9.7 × 7 — where does the decimal point go? (a) 6.79 (b) 679 (c) 0.679 (d) 67.9
15. 15.0.86 × 12 — where does the decimal point go? (a) 10.32 (b) 1.032 (c) 0.1032 (d) 103.2
16. 16.4.6 × 0.3 — where does the decimal point go? (a) 0.138 (b) 13.8 (c) 0.0138 (d) 1.38
17. 17.9.6 × 32 — where does the decimal point go? (a) 30.72 (b) 3.072 (c) 3072 (d) 307.2
18. 18.0.58 × 0.2 — where does the decimal point go? (a) 0.0116 (b) 0.116 (c) 0.00116 (d) 1.16
19. 19.0.76 × 11 — where does the decimal point go? (a) 8.36 (b) 0.836 (c) 83.6 (d) 0.0836
20. 20.0.31 × 2.8 — where does the decimal point go? (a) 0.868 (b) 0.00868 (c) 8.68 (d) 0.0868
21. 21.0.22 × 13 — where does the decimal point go? (a) 2.86 (b) 28.6 (c) 0.286 (d) 0.0286
22. 22.0.44 × 33 — where does the decimal point go? (a) 0.1452 (b) 1.452 (c) 145.2 (d) 14.52
23. 23.0.33 × 0.2 — where does the decimal point go? (a) 0.66 (b) 0.00066 (c) 0.0066 (d) 0.066
24. 24.5.4 × 1.7 — where does the decimal point go? (a) 0.0918 (b) 0.918 (c) 9.18 (d) 91.8
25. 25.9.9 × 0.8 — where does the decimal point go? (a) 0.0792 (b) 0.792 (c) 7.92 (d) 79.2
26. 26.4.8 × 1.8 — where does the decimal point go? (a) 0.0864 (b) 86.4 (c) 8.64 (d) 0.864
27. 27.1.8 × 42 — where does the decimal point go? (a) 756 (b) 7.56 (c) 75.6 (d) 0.756
28. 28.6.9 × 17 — where does the decimal point go? (a) 1.173 (b) 117.3 (c) 1173 (d) 11.73
29. 29.3.9 × 2 — where does the decimal point go? (a) 0.78 (b) 78 (c) 7.8 (d) 0.078
30. 30.2.8 × 0.9 — where does the decimal point go? (a) 0.252 (b) 25.2 (c) 0.0252 (d) 2.52
31. 31.0.64 × 43 — where does the decimal point go? (a) 275.2 (b) 2.752 (c) 0.2752 (d) 27.52
32. 32.0.37 × 3.2 — where does the decimal point go? (a) 1.184 (b) 0.1184 (c) 11.84 (d) 0.01184
33. 33.9.1 × 0.5 — where does the decimal point go? (a) 45.5 (b) 0.455 (c) 4.55 (d) 0.0455
34. 34.0.13 × 41 — where does the decimal point go? (a) 0.533 (b) 53.3 (c) 0.0533 (d) 5.33
35. 35.4.7 × 2 — where does the decimal point go? (a) 9.4 (b) 94 (c) 0.94 (d) 0.094
36. 36.4.6 × 1.4 — where does the decimal point go? (a) 0.0644 (b) 0.644 (c) 6.44 (d) 64.4
37. 37.0.37 × 3 — where does the decimal point go? (a) 0.111 (b) 1.11 (c) 0.0111 (d) 11.1
38. 38.4.1 × 7 — where does the decimal point go? (a) 0.287 (b) 28.7 (c) 287 (d) 2.87
39. 39.8.2 × 0.2 — where does the decimal point go? (a) 16.4 (b) 0.0164 (c) 1.64 (d) 0.164
40. 40.6.5 × 7 — where does the decimal point go? (a) 4.55 (b) 45.5 (c) 0.455 (d) 455

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