Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 952 · 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. 1.5.8 × 48 — where does the decimal point go? (a) 278.4 (b) 2.784 (c) 2784 (d) 27.84
2. 2.0.49 × 0.9 — where does the decimal point go? (a) 4.41 (b) 0.00441 (c) 0.441 (d) 0.0441
3. 3.0.43 × 21 — where does the decimal point go? (a) 0.903 (b) 90.3 (c) 9.03 (d) 0.0903
4. 4.3.1 × 42 — where does the decimal point go? (a) 13.02 (b) 1302 (c) 130.2 (d) 1.302
5. 5.0.22 × 3.7 — where does the decimal point go? (a) 0.814 (b) 0.00814 (c) 8.14 (d) 0.0814
6. 6.0.84 × 0.7 — where does the decimal point go? (a) 5.88 (b) 0.0588 (c) 0.00588 (d) 0.588
7. 7.8.2 × 12 — where does the decimal point go? (a) 98.4 (b) 984 (c) 9.84 (d) 0.984
8. 8.0.91 × 49 — where does the decimal point go? (a) 4.459 (b) 445.9 (c) 0.4459 (d) 44.59
9. 9.0.81 × 24 — where does the decimal point go? (a) 0.1944 (b) 194.4 (c) 19.44 (d) 1.944
10. 10.8.3 × 0.3 — where does the decimal point go? (a) 2.49 (b) 0.249 (c) 24.9 (d) 0.0249
11. 11.8.2 × 3 — where does the decimal point go? (a) 0.246 (b) 24.6 (c) 246 (d) 2.46
12. 12.4.2 × 46 — where does the decimal point go? (a) 193.2 (b) 19.32 (c) 1.932 (d) 1932
13. 13.8.3 × 0.7 — where does the decimal point go? (a) 0.581 (b) 5.81 (c) 0.0581 (d) 58.1
14. 14.0.74 × 43 — where does the decimal point go? (a) 3.182 (b) 31.82 (c) 0.3182 (d) 318.2
15. 15.9.5 × 7 — where does the decimal point go? (a) 66.5 (b) 6.65 (c) 665 (d) 0.665
16. 16.7.3 × 4.1 — where does the decimal point go? (a) 2.993 (b) 299.3 (c) 0.2993 (d) 29.93
17. 17.0.51 × 7 — where does the decimal point go? (a) 3.57 (b) 0.0357 (c) 0.357 (d) 35.7
18. 18.0.82 × 4.9 — where does the decimal point go? (a) 4.018 (b) 40.18 (c) 0.04018 (d) 0.4018
19. 19.1.4 × 0.8 — where does the decimal point go? (a) 0.0112 (b) 1.12 (c) 0.112 (d) 11.2
20. 20.6.8 × 11 — where does the decimal point go? (a) 7.48 (b) 0.748 (c) 74.8 (d) 748
21. 21.0.73 × 3 — where does the decimal point go? (a) 0.0219 (b) 2.19 (c) 21.9 (d) 0.219
22. 22.8.4 × 0.3 — where does the decimal point go? (a) 25.2 (b) 0.0252 (c) 2.52 (d) 0.252
23. 23.0.53 × 48 — where does the decimal point go? (a) 2.544 (b) 25.44 (c) 254.4 (d) 0.2544
24. 24.0.85 × 1.9 — where does the decimal point go? (a) 0.01615 (b) 0.1615 (c) 16.15 (d) 1.615
25. 25.0.17 × 3 — where does the decimal point go? (a) 0.51 (b) 0.051 (c) 5.1 (d) 0.0051
26. 26.0.91 × 8 — where does the decimal point go? (a) 7.28 (b) 0.728 (c) 0.0728 (d) 72.8
27. 27.0.43 × 1.2 — where does the decimal point go? (a) 0.00516 (b) 5.16 (c) 0.0516 (d) 0.516
28. 28.4.7 × 0.4 — where does the decimal point go? (a) 1.88 (b) 0.0188 (c) 0.188 (d) 18.8
29. 29.9.4 × 0.3 — where does the decimal point go? (a) 2.82 (b) 0.0282 (c) 28.2 (d) 0.282
30. 30.0.64 × 4 — where does the decimal point go? (a) 0.256 (b) 0.0256 (c) 25.6 (d) 2.56
31. 31.5.9 × 0.8 — where does the decimal point go? (a) 0.0472 (b) 0.472 (c) 47.2 (d) 4.72
32. 32.0.17 × 8 — where does the decimal point go? (a) 0.0136 (b) 1.36 (c) 0.136 (d) 13.6
33. 33.0.71 × 0.4 — where does the decimal point go? (a) 2.84 (b) 0.284 (c) 0.0284 (d) 0.00284
34. 34.4.8 × 29 — where does the decimal point go? (a) 13.92 (b) 1392 (c) 1.392 (d) 139.2
35. 35.0.61 × 2 — where does the decimal point go? (a) 1.22 (b) 0.122 (c) 0.0122 (d) 12.2
36. 36.0.66 × 3 — where does the decimal point go? (a) 0.0198 (b) 1.98 (c) 19.8 (d) 0.198
37. 37.7.3 × 1.4 — where does the decimal point go? (a) 102.2 (b) 10.22 (c) 1.022 (d) 0.1022
38. 38.9.7 × 0.9 — where does the decimal point go? (a) 0.873 (b) 0.0873 (c) 87.3 (d) 8.73
39. 39.2.1 × 7 — where does the decimal point go? (a) 147 (b) 0.147 (c) 1.47 (d) 14.7
40. 40.0.94 × 0.4 — where does the decimal point go? (a) 0.00376 (b) 3.76 (c) 0.376 (d) 0.0376

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