Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 864 · 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. 1.0.97 × 3.6 — where does the decimal point go? (a) 34.92 (b) 3.492 (c) 0.3492 (d) 0.03492
2. 2.0.74 × 22 — where does the decimal point go? (a) 0.1628 (b) 16.28 (c) 1.628 (d) 162.8
3. 3.0.15 × 7 — where does the decimal point go? (a) 0.105 (b) 0.0105 (c) 10.5 (d) 1.05
4. 4.2.4 × 42 — where does the decimal point go? (a) 100.8 (b) 10.08 (c) 1.008 (d) 1008
5. 5.0.48 × 0.7 — where does the decimal point go? (a) 0.0336 (b) 3.36 (c) 0.336 (d) 0.00336
6. 6.2.6 × 9 — where does the decimal point go? (a) 234 (b) 23.4 (c) 0.234 (d) 2.34
7. 7.9.5 × 0.7 — where does the decimal point go? (a) 0.665 (b) 0.0665 (c) 66.5 (d) 6.65
8. 8.7.9 × 9 — where does the decimal point go? (a) 711 (b) 0.711 (c) 7.11 (d) 71.1
9. 9.0.99 × 9 — where does the decimal point go? (a) 0.891 (b) 0.0891 (c) 89.1 (d) 8.91
10. 10.0.53 × 8 — where does the decimal point go? (a) 42.4 (b) 0.0424 (c) 4.24 (d) 0.424
11. 11.4.5 × 21 — where does the decimal point go? (a) 9.45 (b) 0.945 (c) 94.5 (d) 945
12. 12.0.68 × 1.9 — where does the decimal point go? (a) 12.92 (b) 1.292 (c) 0.01292 (d) 0.1292
13. 13.3.4 × 7 — where does the decimal point go? (a) 23.8 (b) 238 (c) 2.38 (d) 0.238
14. 14.0.13 × 0.2 — where does the decimal point go? (a) 0.0026 (b) 0.026 (c) 0.00026 (d) 0.26
15. 15.0.31 × 0.2 — where does the decimal point go? (a) 0.0062 (b) 0.062 (c) 0.62 (d) 0.00062
16. 16.0.67 × 4 — where does the decimal point go? (a) 0.268 (b) 26.8 (c) 0.0268 (d) 2.68
17. 17.0.37 × 4.3 — where does the decimal point go? (a) 15.91 (b) 1.591 (c) 0.01591 (d) 0.1591
18. 18.0.85 × 49 — where does the decimal point go? (a) 416.5 (b) 0.4165 (c) 4.165 (d) 41.65
19. 19.0.77 × 45 — where does the decimal point go? (a) 0.3465 (b) 34.65 (c) 3.465 (d) 346.5
20. 20.6.9 × 0.6 — where does the decimal point go? (a) 41.4 (b) 0.0414 (c) 0.414 (d) 4.14
21. 21.3.3 × 3.9 — where does the decimal point go? (a) 128.7 (b) 12.87 (c) 0.1287 (d) 1.287
22. 22.0.53 × 0.3 — where does the decimal point go? (a) 0.159 (b) 0.0159 (c) 0.00159 (d) 1.59
23. 23.9.1 × 2.8 — where does the decimal point go? (a) 0.2548 (b) 254.8 (c) 25.48 (d) 2.548
24. 24.1.6 × 31 — where does the decimal point go? (a) 496 (b) 4.96 (c) 49.6 (d) 0.496
25. 25.0.64 × 9 — where does the decimal point go? (a) 0.576 (b) 57.6 (c) 5.76 (d) 0.0576
26. 26.0.16 × 2 — where does the decimal point go? (a) 0.032 (b) 0.0032 (c) 0.32 (d) 3.2
27. 27.0.93 × 41 — where does the decimal point go? (a) 0.3813 (b) 3.813 (c) 381.3 (d) 38.13
28. 28.3.1 × 1.7 — where does the decimal point go? (a) 0.527 (b) 0.0527 (c) 5.27 (d) 52.7
29. 29.5.3 × 4.2 — where does the decimal point go? (a) 22.26 (b) 222.6 (c) 0.2226 (d) 2.226
30. 30.4.7 × 32 — where does the decimal point go? (a) 15.04 (b) 1.504 (c) 1504 (d) 150.4
31. 31.2.7 × 4.4 — where does the decimal point go? (a) 11.88 (b) 118.8 (c) 0.1188 (d) 1.188
32. 32.2.4 × 32 — where does the decimal point go? (a) 76.8 (b) 768 (c) 0.768 (d) 7.68
33. 33.8.3 × 4.8 — where does the decimal point go? (a) 3.984 (b) 39.84 (c) 0.3984 (d) 398.4
34. 34.0.61 × 46 — where does the decimal point go? (a) 2.806 (b) 0.2806 (c) 280.6 (d) 28.06
35. 35.2.2 × 7 — where does the decimal point go? (a) 15.4 (b) 1.54 (c) 0.154 (d) 154
36. 36.5.6 × 2.9 — where does the decimal point go? (a) 1.624 (b) 162.4 (c) 0.1624 (d) 16.24
37. 37.1.3 × 3.5 — where does the decimal point go? (a) 4.55 (b) 0.0455 (c) 0.455 (d) 45.5
38. 38.7.2 × 11 — where does the decimal point go? (a) 79.2 (b) 792 (c) 0.792 (d) 7.92
39. 39.7.4 × 9 — where does the decimal point go? (a) 6.66 (b) 0.666 (c) 66.6 (d) 666
40. 40.9.4 × 0.7 — where does the decimal point go? (a) 6.58 (b) 0.0658 (c) 65.8 (d) 0.658

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