Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 234 · 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. 1.3.4 × 2.6 — where does the decimal point go? (a) 88.4 (b) 8.84 (c) 0.884 (d) 0.0884
2. 2.2.3 × 3 — where does the decimal point go? (a) 0.69 (b) 6.9 (c) 69 (d) 0.069
3. 3.0.82 × 3 — where does the decimal point go? (a) 0.246 (b) 2.46 (c) 24.6 (d) 0.0246
4. 4.0.12 × 4 — where does the decimal point go? (a) 0.048 (b) 0.48 (c) 4.8 (d) 0.0048
5. 5.5.8 × 12 — where does the decimal point go? (a) 6.96 (b) 696 (c) 69.6 (d) 0.696
6. 6.0.33 × 2.9 — where does the decimal point go? (a) 0.00957 (b) 0.0957 (c) 9.57 (d) 0.957
7. 7.7.2 × 0.2 — where does the decimal point go? (a) 0.144 (b) 14.4 (c) 1.44 (d) 0.0144
8. 8.0.77 × 0.4 — where does the decimal point go? (a) 0.00308 (b) 0.308 (c) 3.08 (d) 0.0308
9. 9.0.97 × 0.5 — where does the decimal point go? (a) 0.0485 (b) 0.00485 (c) 0.485 (d) 4.85
10. 10.9.1 × 0.8 — where does the decimal point go? (a) 0.728 (b) 7.28 (c) 0.0728 (d) 72.8
11. 11.8.9 × 1.6 — where does the decimal point go? (a) 14.24 (b) 0.1424 (c) 1.424 (d) 142.4
12. 12.3.4 × 0.8 — where does the decimal point go? (a) 2.72 (b) 0.272 (c) 0.0272 (d) 27.2
13. 13.2.9 × 0.3 — where does the decimal point go? (a) 8.7 (b) 0.0087 (c) 0.87 (d) 0.087
14. 14.0.63 × 46 — where does the decimal point go? (a) 0.2898 (b) 28.98 (c) 289.8 (d) 2.898
15. 15.1.7 × 2 — where does the decimal point go? (a) 3.4 (b) 0.34 (c) 34 (d) 0.034
16. 16.6.7 × 39 — where does the decimal point go? (a) 26.13 (b) 2.613 (c) 2613 (d) 261.3
17. 17.0.29 × 0.5 — where does the decimal point go? (a) 0.00145 (b) 1.45 (c) 0.145 (d) 0.0145
18. 18.0.69 × 12 — where does the decimal point go? (a) 0.0828 (b) 8.28 (c) 82.8 (d) 0.828
19. 19.9.9 × 6 — where does the decimal point go? (a) 5.94 (b) 0.594 (c) 594 (d) 59.4
20. 20.0.48 × 4.8 — where does the decimal point go? (a) 23.04 (b) 2.304 (c) 0.02304 (d) 0.2304
21. 21.0.72 × 7 — where does the decimal point go? (a) 0.0504 (b) 50.4 (c) 0.504 (d) 5.04
22. 22.6.3 × 3 — where does the decimal point go? (a) 189 (b) 18.9 (c) 1.89 (d) 0.189
23. 23.0.97 × 8 — where does the decimal point go? (a) 0.776 (b) 0.0776 (c) 77.6 (d) 7.76
24. 24.0.41 × 3 — where does the decimal point go? (a) 0.123 (b) 12.3 (c) 0.0123 (d) 1.23
25. 25.3.9 × 18 — where does the decimal point go? (a) 0.702 (b) 7.02 (c) 702 (d) 70.2
26. 26.9.8 × 4 — where does the decimal point go? (a) 392 (b) 39.2 (c) 3.92 (d) 0.392
27. 27.4.7 × 5 — where does the decimal point go? (a) 23.5 (b) 0.235 (c) 2.35 (d) 235
28. 28.2.4 × 0.3 — where does the decimal point go? (a) 0.072 (b) 0.0072 (c) 0.72 (d) 7.2
29. 29.0.91 × 0.8 — where does the decimal point go? (a) 0.728 (b) 7.28 (c) 0.00728 (d) 0.0728
30. 30.6.8 × 39 — where does the decimal point go? (a) 265.2 (b) 26.52 (c) 2.652 (d) 2652
31. 31.7.9 × 0.6 — where does the decimal point go? (a) 0.474 (b) 4.74 (c) 0.0474 (d) 47.4
32. 32.7.1 × 0.8 — where does the decimal point go? (a) 0.568 (b) 56.8 (c) 0.0568 (d) 5.68
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. 34.4.4 × 0.8 — where does the decimal point go? (a) 0.352 (b) 35.2 (c) 0.0352 (d) 3.52
35. 35.0.68 × 0.7 — where does the decimal point go? (a) 0.0476 (b) 0.00476 (c) 0.476 (d) 4.76
36. 36.0.62 × 0.7 — where does the decimal point go? (a) 0.0434 (b) 4.34 (c) 0.434 (d) 0.00434
37. 37.0.19 × 5 — where does the decimal point go? (a) 0.95 (b) 0.0095 (c) 9.5 (d) 0.095
38. 38.9.7 × 1.8 — where does the decimal point go? (a) 17.46 (b) 174.6 (c) 0.1746 (d) 1.746
39. 39.0.41 × 2 — where does the decimal point go? (a) 0.82 (b) 8.2 (c) 0.082 (d) 0.0082
40. 40.5.5 × 5 — where does the decimal point go? (a) 275 (b) 27.5 (c) 0.275 (d) 2.75

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