Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 785 · 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. 1.5.3 × 3.6 — where does the decimal point go? (a) 19.08 (b) 1.908 (c) 190.8 (d) 0.1908
2. 2.0.93 × 2 — where does the decimal point go? (a) 1.86 (b) 18.6 (c) 0.186 (d) 0.0186
3. 3.0.28 × 3.1 — where does the decimal point go? (a) 0.0868 (b) 0.00868 (c) 8.68 (d) 0.868
4. 4.7.2 × 4.3 — where does the decimal point go? (a) 309.6 (b) 30.96 (c) 3.096 (d) 0.3096
5. 5.6.3 × 4.4 — where does the decimal point go? (a) 27.72 (b) 2.772 (c) 277.2 (d) 0.2772
6. 6.0.71 × 4.5 — where does the decimal point go? (a) 31.95 (b) 3.195 (c) 0.03195 (d) 0.3195
7. 7.1.3 × 6 — where does the decimal point go? (a) 7.8 (b) 78 (c) 0.78 (d) 0.078
8. 8.3.3 × 3 — where does the decimal point go? (a) 0.099 (b) 0.99 (c) 9.9 (d) 99
9. 9.3.3 × 29 — where does the decimal point go? (a) 0.957 (b) 957 (c) 95.7 (d) 9.57
10. 10.7.7 × 4 — where does the decimal point go? (a) 0.308 (b) 308 (c) 30.8 (d) 3.08
11. 11.4.4 × 1.7 — where does the decimal point go? (a) 0.748 (b) 74.8 (c) 7.48 (d) 0.0748
12. 12.0.51 × 0.8 — where does the decimal point go? (a) 0.408 (b) 0.0408 (c) 4.08 (d) 0.00408
13. 13.0.56 × 1.2 — where does the decimal point go? (a) 0.0672 (b) 0.00672 (c) 0.672 (d) 6.72
14. 14.0.56 × 31 — where does the decimal point go? (a) 1.736 (b) 173.6 (c) 0.1736 (d) 17.36
15. 15.1.2 × 4.8 — where does the decimal point go? (a) 0.0576 (b) 0.576 (c) 5.76 (d) 57.6
16. 16.0.57 × 0.8 — where does the decimal point go? (a) 0.0456 (b) 0.456 (c) 0.00456 (d) 4.56
17. 17.0.94 × 0.8 — where does the decimal point go? (a) 0.0752 (b) 0.752 (c) 0.00752 (d) 7.52
18. 18.0.78 × 0.9 — where does the decimal point go? (a) 0.702 (b) 0.0702 (c) 0.00702 (d) 7.02
19. 19.0.77 × 0.2 — where does the decimal point go? (a) 0.00154 (b) 0.0154 (c) 1.54 (d) 0.154
20. 20.0.57 × 16 — where does the decimal point go? (a) 0.0912 (b) 9.12 (c) 0.912 (d) 91.2
21. 21.1.3 × 1.4 — where does the decimal point go? (a) 0.182 (b) 18.2 (c) 0.0182 (d) 1.82
22. 22.0.77 × 0.8 — where does the decimal point go? (a) 6.16 (b) 0.00616 (c) 0.616 (d) 0.0616
23. 23.0.66 × 3.3 — where does the decimal point go? (a) 2.178 (b) 0.02178 (c) 21.78 (d) 0.2178
24. 24.3.6 × 0.2 — where does the decimal point go? (a) 0.0072 (b) 0.72 (c) 7.2 (d) 0.072
25. 25.8.1 × 2.8 — where does the decimal point go? (a) 226.8 (b) 22.68 (c) 0.2268 (d) 2.268
26. 26.2.6 × 3 — where does the decimal point go? (a) 0.78 (b) 0.078 (c) 78 (d) 7.8
27. 27.2.3 × 38 — where does the decimal point go? (a) 8.74 (b) 0.874 (c) 874 (d) 87.4
28. 28.3.6 × 6 — where does the decimal point go? (a) 2.16 (b) 21.6 (c) 0.216 (d) 216
29. 29.4.2 × 9 — where does the decimal point go? (a) 0.378 (b) 3.78 (c) 37.8 (d) 378
30. 30.0.73 × 2.1 — where does the decimal point go? (a) 1.533 (b) 0.1533 (c) 0.01533 (d) 15.33
31. 31.0.67 × 34 — where does the decimal point go? (a) 227.8 (b) 22.78 (c) 0.2278 (d) 2.278
32. 32.1.3 × 0.6 — where does the decimal point go? (a) 0.0078 (b) 0.078 (c) 7.8 (d) 0.78
33. 33.0.72 × 0.4 — where does the decimal point go? (a) 0.00288 (b) 0.288 (c) 2.88 (d) 0.0288
34. 34.2.7 × 2 — where does the decimal point go? (a) 0.054 (b) 0.54 (c) 5.4 (d) 54
35. 35.4.4 × 0.8 — where does the decimal point go? (a) 0.0352 (b) 3.52 (c) 0.352 (d) 35.2
36. 36.2.9 × 24 — where does the decimal point go? (a) 0.696 (b) 69.6 (c) 6.96 (d) 696
37. 37.5.4 × 0.3 — where does the decimal point go? (a) 0.0162 (b) 0.162 (c) 16.2 (d) 1.62
38. 38.0.73 × 5 — where does the decimal point go? (a) 0.0365 (b) 3.65 (c) 0.365 (d) 36.5
39. 39.8.9 × 3 — where does the decimal point go? (a) 267 (b) 26.7 (c) 2.67 (d) 0.267
40. 40.0.48 × 7 — where does the decimal point go? (a) 0.336 (b) 0.0336 (c) 3.36 (d) 33.6

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