Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 563 · 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. 1.2.6 × 0.6 — where does the decimal point go? (a) 1.56 (b) 0.0156 (c) 15.6 (d) 0.156
2. 2.1.3 × 0.3 — where does the decimal point go? (a) 0.39 (b) 0.0039 (c) 3.9 (d) 0.039
3. 3.7.7 × 2 — where does the decimal point go? (a) 154 (b) 0.154 (c) 1.54 (d) 15.4
4. 4.0.52 × 22 — where does the decimal point go? (a) 11.44 (b) 0.1144 (c) 1.144 (d) 114.4
5. 5.0.49 × 3.5 — where does the decimal point go? (a) 0.01715 (b) 0.1715 (c) 1.715 (d) 17.15
6. 6.8.1 × 45 — where does the decimal point go? (a) 364.5 (b) 3645 (c) 36.45 (d) 3.645
7. 7.3.9 × 7 — where does the decimal point go? (a) 2.73 (b) 27.3 (c) 0.273 (d) 273
8. 8.0.59 × 0.2 — where does the decimal point go? (a) 0.118 (b) 0.0118 (c) 1.18 (d) 0.00118
9. 9.5.6 × 14 — where does the decimal point go? (a) 78.4 (b) 7.84 (c) 784 (d) 0.784
10. 10.0.89 × 4 — where does the decimal point go? (a) 3.56 (b) 0.0356 (c) 0.356 (d) 35.6
11. 11.4.9 × 25 — where does the decimal point go? (a) 122.5 (b) 1225 (c) 12.25 (d) 1.225
12. 12.5.2 × 1.1 — where does the decimal point go? (a) 5.72 (b) 0.572 (c) 0.0572 (d) 57.2
13. 13.0.69 × 0.2 — where does the decimal point go? (a) 1.38 (b) 0.00138 (c) 0.138 (d) 0.0138
14. 14.1.8 × 8 — where does the decimal point go? (a) 14.4 (b) 1.44 (c) 144 (d) 0.144
15. 15.0.68 × 1.2 — where does the decimal point go? (a) 0.00816 (b) 8.16 (c) 0.816 (d) 0.0816
16. 16.2.1 × 0.5 — where does the decimal point go? (a) 0.105 (b) 1.05 (c) 10.5 (d) 0.0105
17. 17.0.18 × 4.8 — where does the decimal point go? (a) 0.00864 (b) 0.864 (c) 0.0864 (d) 8.64
18. 18.0.66 × 4.2 — where does the decimal point go? (a) 0.02772 (b) 2.772 (c) 0.2772 (d) 27.72
19. 19.2.8 × 0.2 — where does the decimal point go? (a) 0.056 (b) 5.6 (c) 0.56 (d) 0.0056
20. 20.9.9 × 0.8 — where does the decimal point go? (a) 79.2 (b) 7.92 (c) 0.0792 (d) 0.792
21. 21.5.8 × 48 — where does the decimal point go? (a) 27.84 (b) 278.4 (c) 2.784 (d) 2784
22. 22.0.73 × 9 — where does the decimal point go? (a) 0.657 (b) 65.7 (c) 0.0657 (d) 6.57
23. 23.9.8 × 3.9 — where does the decimal point go? (a) 3.822 (b) 382.2 (c) 0.3822 (d) 38.22
24. 24.0.54 × 1.7 — where does the decimal point go? (a) 0.00918 (b) 0.0918 (c) 0.918 (d) 9.18
25. 25.0.36 × 16 — where does the decimal point go? (a) 0.576 (b) 57.6 (c) 0.0576 (d) 5.76
26. 26.0.84 × 7 — where does the decimal point go? (a) 58.8 (b) 5.88 (c) 0.588 (d) 0.0588
27. 27.3.4 × 14 — where does the decimal point go? (a) 0.476 (b) 476 (c) 47.6 (d) 4.76
28. 28.5.5 × 0.3 — where does the decimal point go? (a) 16.5 (b) 0.0165 (c) 0.165 (d) 1.65
29. 29.3.7 × 19 — where does the decimal point go? (a) 7.03 (b) 703 (c) 0.703 (d) 70.3
30. 30.0.55 × 9 — where does the decimal point go? (a) 0.495 (b) 0.0495 (c) 4.95 (d) 49.5
31. 31.0.82 × 0.3 — where does the decimal point go? (a) 0.00246 (b) 2.46 (c) 0.0246 (d) 0.246
32. 32.0.79 × 4 — where does the decimal point go? (a) 0.0316 (b) 3.16 (c) 31.6 (d) 0.316
33. 33.3.1 × 5 — where does the decimal point go? (a) 0.155 (b) 155 (c) 15.5 (d) 1.55
34. 34.0.92 × 41 — where does the decimal point go? (a) 37.72 (b) 0.3772 (c) 3.772 (d) 377.2
35. 35.0.23 × 44 — where does the decimal point go? (a) 0.1012 (b) 1.012 (c) 101.2 (d) 10.12
36. 36.0.69 × 4.4 — where does the decimal point go? (a) 0.3036 (b) 30.36 (c) 0.03036 (d) 3.036
37. 37.0.12 × 32 — where does the decimal point go? (a) 3.84 (b) 0.384 (c) 0.0384 (d) 38.4
38. 38.2.2 × 14 — where does the decimal point go? (a) 30.8 (b) 0.308 (c) 3.08 (d) 308
39. 39.0.54 × 33 — where does the decimal point go? (a) 1.782 (b) 17.82 (c) 0.1782 (d) 178.2
40. 40.4.9 × 5 — where does the decimal point go? (a) 24.5 (b) 245 (c) 2.45 (d) 0.245

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