Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 660 · 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. 1.4.7 × 4.5 — where does the decimal point go? (a) 211.5 (b) 0.2115 (c) 2.115 (d) 21.15
2. 2.0.52 × 2.4 — where does the decimal point go? (a) 1.248 (b) 12.48 (c) 0.01248 (d) 0.1248
3. 3.0.21 × 0.6 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 0.126 (d) 0.00126
4. 4.0.39 × 1.9 — where does the decimal point go? (a) 7.41 (b) 0.00741 (c) 0.0741 (d) 0.741
5. 5.0.36 × 9 — where does the decimal point go? (a) 32.4 (b) 3.24 (c) 0.324 (d) 0.0324
6. 6.0.44 × 0.2 — where does the decimal point go? (a) 0.00088 (b) 0.0088 (c) 0.88 (d) 0.088
7. 7.0.82 × 6 — where does the decimal point go? (a) 4.92 (b) 0.492 (c) 0.0492 (d) 49.2
8. 8.5.4 × 0.2 — where does the decimal point go? (a) 10.8 (b) 0.0108 (c) 0.108 (d) 1.08
9. 9.8.3 × 0.3 — where does the decimal point go? (a) 2.49 (b) 24.9 (c) 0.0249 (d) 0.249
10. 10.3.7 × 5 — where does the decimal point go? (a) 1.85 (b) 18.5 (c) 185 (d) 0.185
11. 11.0.45 × 2.9 — where does the decimal point go? (a) 13.05 (b) 0.1305 (c) 0.01305 (d) 1.305
12. 12.0.71 × 0.3 — where does the decimal point go? (a) 0.213 (b) 0.0213 (c) 2.13 (d) 0.00213
13. 13.4.7 × 3 — where does the decimal point go? (a) 14.1 (b) 0.141 (c) 1.41 (d) 141
14. 14.5.4 × 3.3 — where does the decimal point go? (a) 0.1782 (b) 1.782 (c) 178.2 (d) 17.82
15. 15.5.9 × 4.3 — where does the decimal point go? (a) 253.7 (b) 2.537 (c) 25.37 (d) 0.2537
16. 16.2.8 × 2 — where does the decimal point go? (a) 5.6 (b) 0.56 (c) 0.056 (d) 56
17. 17.7.3 × 1.6 — where does the decimal point go? (a) 116.8 (b) 11.68 (c) 1.168 (d) 0.1168
18. 18.3.2 × 2.4 — where does the decimal point go? (a) 0.768 (b) 76.8 (c) 7.68 (d) 0.0768
19. 19.2.4 × 0.8 — where does the decimal point go? (a) 0.192 (b) 19.2 (c) 1.92 (d) 0.0192
20. 20.0.89 × 8 — where does the decimal point go? (a) 7.12 (b) 0.0712 (c) 0.712 (d) 71.2
21. 21.2.3 × 0.6 — where does the decimal point go? (a) 13.8 (b) 1.38 (c) 0.0138 (d) 0.138
22. 22.0.36 × 47 — where does the decimal point go? (a) 0.1692 (b) 169.2 (c) 16.92 (d) 1.692
23. 23.1.9 × 3.6 — where does the decimal point go? (a) 6.84 (b) 68.4 (c) 0.0684 (d) 0.684
24. 24.4.6 × 39 — where does the decimal point go? (a) 179.4 (b) 1.794 (c) 17.94 (d) 1794
25. 25.7.3 × 0.9 — where does the decimal point go? (a) 6.57 (b) 0.0657 (c) 65.7 (d) 0.657
26. 26.0.71 × 2 — where does the decimal point go? (a) 0.142 (b) 14.2 (c) 0.0142 (d) 1.42
27. 27.0.81 × 45 — where does the decimal point go? (a) 3.645 (b) 364.5 (c) 0.3645 (d) 36.45
28. 28.9.4 × 39 — where does the decimal point go? (a) 3666 (b) 36.66 (c) 366.6 (d) 3.666
29. 29.0.71 × 6 — where does the decimal point go? (a) 0.0426 (b) 0.426 (c) 42.6 (d) 4.26
30. 30.0.48 × 46 — where does the decimal point go? (a) 0.2208 (b) 22.08 (c) 220.8 (d) 2.208
31. 31.1.3 × 8 — where does the decimal point go? (a) 0.104 (b) 1.04 (c) 10.4 (d) 104
32. 32.1.2 × 0.9 — where does the decimal point go? (a) 0.108 (b) 1.08 (c) 0.0108 (d) 10.8
33. 33.0.27 × 3 — where does the decimal point go? (a) 8.1 (b) 0.0081 (c) 0.081 (d) 0.81
34. 34.6.1 × 4.6 — where does the decimal point go? (a) 0.2806 (b) 280.6 (c) 2.806 (d) 28.06
35. 35.0.16 × 4.3 — where does the decimal point go? (a) 6.88 (b) 0.688 (c) 0.00688 (d) 0.0688
36. 36.0.16 × 3.3 — where does the decimal point go? (a) 0.0528 (b) 0.528 (c) 5.28 (d) 0.00528
37. 37.0.32 × 8 — where does the decimal point go? (a) 2.56 (b) 0.0256 (c) 0.256 (d) 25.6
38. 38.0.97 × 42 — where does the decimal point go? (a) 407.4 (b) 40.74 (c) 4.074 (d) 0.4074
39. 39.1.9 × 48 — where does the decimal point go? (a) 912 (b) 0.912 (c) 9.12 (d) 91.2
40. 40.0.16 × 3 — where does the decimal point go? (a) 0.48 (b) 4.8 (c) 0.048 (d) 0.0048

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