Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 931 · 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. 1.5.9 × 0.7 — where does the decimal point go? (a) 0.0413 (b) 4.13 (c) 0.413 (d) 41.3
2. 2.9.1 × 3.4 — where does the decimal point go? (a) 3.094 (b) 0.3094 (c) 30.94 (d) 309.4
3. 3.0.96 × 0.6 — where does the decimal point go? (a) 0.576 (b) 0.0576 (c) 5.76 (d) 0.00576
4. 4.9.7 × 9 — where does the decimal point go? (a) 8.73 (b) 873 (c) 87.3 (d) 0.873
5. 5.1.2 × 4 — where does the decimal point go? (a) 0.48 (b) 48 (c) 0.048 (d) 4.8
6. 6.6.8 × 2 — where does the decimal point go? (a) 0.136 (b) 13.6 (c) 136 (d) 1.36
7. 7.4.1 × 2 — where does the decimal point go? (a) 0.082 (b) 8.2 (c) 0.82 (d) 82
8. 8.9.2 × 28 — where does the decimal point go? (a) 25.76 (b) 257.6 (c) 2.576 (d) 2576
9. 9.0.81 × 3.1 — where does the decimal point go? (a) 0.02511 (b) 25.11 (c) 0.2511 (d) 2.511
10. 10.3.9 × 0.4 — where does the decimal point go? (a) 1.56 (b) 15.6 (c) 0.156 (d) 0.0156
11. 11.0.33 × 33 — where does the decimal point go? (a) 1.089 (b) 0.1089 (c) 10.89 (d) 108.9
12. 12.3.1 × 1.9 — where does the decimal point go? (a) 0.0589 (b) 5.89 (c) 0.589 (d) 58.9
13. 13.9.7 × 1.1 — where does the decimal point go? (a) 1.067 (b) 0.1067 (c) 10.67 (d) 106.7
14. 14.0.57 × 0.9 — where does the decimal point go? (a) 5.13 (b) 0.00513 (c) 0.513 (d) 0.0513
15. 15.6.9 × 7 — where does the decimal point go? (a) 48.3 (b) 483 (c) 0.483 (d) 4.83
16. 16.5.6 × 6 — where does the decimal point go? (a) 3.36 (b) 0.336 (c) 336 (d) 33.6
17. 17.0.76 × 4.9 — where does the decimal point go? (a) 0.3724 (b) 37.24 (c) 3.724 (d) 0.03724
18. 18.2.4 × 1.1 — where does the decimal point go? (a) 2.64 (b) 0.0264 (c) 0.264 (d) 26.4
19. 19.0.58 × 3.2 — where does the decimal point go? (a) 1.856 (b) 0.1856 (c) 18.56 (d) 0.01856
20. 20.1.8 × 0.6 — where does the decimal point go? (a) 1.08 (b) 0.108 (c) 10.8 (d) 0.0108
21. 21.0.93 × 8 — where does the decimal point go? (a) 0.744 (b) 0.0744 (c) 74.4 (d) 7.44
22. 22.6.8 × 0.2 — where does the decimal point go? (a) 1.36 (b) 0.136 (c) 0.0136 (d) 13.6
23. 23.0.16 × 4 — where does the decimal point go? (a) 0.64 (b) 0.0064 (c) 0.064 (d) 6.4
24. 24.9.9 × 34 — where does the decimal point go? (a) 33.66 (b) 3.366 (c) 336.6 (d) 3366
25. 25.8.3 × 4 — where does the decimal point go? (a) 332 (b) 33.2 (c) 0.332 (d) 3.32
26. 26.0.76 × 36 — where does the decimal point go? (a) 2.736 (b) 273.6 (c) 27.36 (d) 0.2736
27. 27.9.6 × 0.4 — where does the decimal point go? (a) 0.384 (b) 0.0384 (c) 3.84 (d) 38.4
28. 28.6.4 × 1.2 — where does the decimal point go? (a) 0.768 (b) 7.68 (c) 76.8 (d) 0.0768
29. 29.7.2 × 3 — where does the decimal point go? (a) 21.6 (b) 216 (c) 0.216 (d) 2.16
30. 30.0.34 × 0.8 — where does the decimal point go? (a) 2.72 (b) 0.00272 (c) 0.0272 (d) 0.272
31. 31.9.9 × 2 — where does the decimal point go? (a) 198 (b) 19.8 (c) 0.198 (d) 1.98
32. 32.2.2 × 43 — where does the decimal point go? (a) 94.6 (b) 9.46 (c) 0.946 (d) 946
33. 33.0.48 × 0.4 — where does the decimal point go? (a) 0.192 (b) 0.0192 (c) 1.92 (d) 0.00192
34. 34.1.5 × 0.3 — where does the decimal point go? (a) 0.0045 (b) 0.045 (c) 0.45 (d) 4.5
35. 35.0.44 × 16 — where does the decimal point go? (a) 70.4 (b) 0.0704 (c) 7.04 (d) 0.704
36. 36.0.49 × 2.2 — where does the decimal point go? (a) 1.078 (b) 0.01078 (c) 10.78 (d) 0.1078
37. 37.0.87 × 3.2 — where does the decimal point go? (a) 0.2784 (b) 0.02784 (c) 27.84 (d) 2.784
38. 38.0.99 × 1.8 — where does the decimal point go? (a) 1.782 (b) 17.82 (c) 0.01782 (d) 0.1782
39. 39.4.2 × 0.2 — where does the decimal point go? (a) 0.84 (b) 0.084 (c) 0.0084 (d) 8.4
40. 40.0.61 × 3 — where does the decimal point go? (a) 1.83 (b) 0.183 (c) 18.3 (d) 0.0183

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