Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 361 · 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. 1.0.24 × 19 — where does the decimal point go? (a) 0.0456 (b) 0.456 (c) 4.56 (d) 45.6
2. 2.0.29 × 23 — where does the decimal point go? (a) 0.667 (b) 0.0667 (c) 6.67 (d) 66.7
3. 3.1.8 × 2.6 — where does the decimal point go? (a) 46.8 (b) 0.0468 (c) 4.68 (d) 0.468
4. 4.7.4 × 1.6 — where does the decimal point go? (a) 0.1184 (b) 118.4 (c) 11.84 (d) 1.184
5. 5.0.88 × 0.6 — where does the decimal point go? (a) 0.0528 (b) 0.00528 (c) 5.28 (d) 0.528
6. 6.0.84 × 0.4 — where does the decimal point go? (a) 0.0336 (b) 0.00336 (c) 3.36 (d) 0.336
7. 7.2.2 × 0.8 — where does the decimal point go? (a) 0.0176 (b) 17.6 (c) 0.176 (d) 1.76
8. 8.2.9 × 0.3 — where does the decimal point go? (a) 8.7 (b) 0.087 (c) 0.0087 (d) 0.87
9. 9.5.8 × 6 — where does the decimal point go? (a) 0.348 (b) 34.8 (c) 3.48 (d) 348
10. 10.0.91 × 8 — where does the decimal point go? (a) 0.728 (b) 0.0728 (c) 7.28 (d) 72.8
11. 11.0.77 × 0.7 — where does the decimal point go? (a) 0.0539 (b) 0.539 (c) 0.00539 (d) 5.39
12. 12.0.17 × 21 — where does the decimal point go? (a) 0.0357 (b) 3.57 (c) 35.7 (d) 0.357
13. 13.0.29 × 2 — where does the decimal point go? (a) 0.058 (b) 0.0058 (c) 0.58 (d) 5.8
14. 14.0.24 × 0.8 — where does the decimal point go? (a) 0.0192 (b) 0.00192 (c) 0.192 (d) 1.92
15. 15.0.49 × 5 — where does the decimal point go? (a) 2.45 (b) 0.0245 (c) 0.245 (d) 24.5
16. 16.9.7 × 1.8 — where does the decimal point go? (a) 174.6 (b) 0.1746 (c) 17.46 (d) 1.746
17. 17.1.5 × 0.9 — where does the decimal point go? (a) 1.35 (b) 0.0135 (c) 13.5 (d) 0.135
18. 18.7.9 × 43 — where does the decimal point go? (a) 339.7 (b) 3.397 (c) 33.97 (d) 3397
19. 19.2.4 × 21 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 504 (d) 0.504
20. 20.0.27 × 4.2 — where does the decimal point go? (a) 0.1134 (b) 1.134 (c) 0.01134 (d) 11.34
21. 21.3.2 × 3.9 — where does the decimal point go? (a) 12.48 (b) 0.1248 (c) 124.8 (d) 1.248
22. 22.5.6 × 32 — where does the decimal point go? (a) 1792 (b) 1.792 (c) 179.2 (d) 17.92
23. 23.3.4 × 0.8 — where does the decimal point go? (a) 0.0272 (b) 2.72 (c) 27.2 (d) 0.272
24. 24.8.7 × 1.7 — where does the decimal point go? (a) 1.479 (b) 147.9 (c) 14.79 (d) 0.1479
25. 25.9.5 × 0.5 — where does the decimal point go? (a) 0.475 (b) 4.75 (c) 0.0475 (d) 47.5
26. 26.2.3 × 3 — where does the decimal point go? (a) 0.69 (b) 0.069 (c) 69 (d) 6.9
27. 27.8.2 × 3 — where does the decimal point go? (a) 0.246 (b) 2.46 (c) 246 (d) 24.6
28. 28.6.3 × 1.2 — where does the decimal point go? (a) 0.0756 (b) 75.6 (c) 7.56 (d) 0.756
29. 29.0.76 × 2 — where does the decimal point go? (a) 15.2 (b) 0.152 (c) 0.0152 (d) 1.52
30. 30.0.82 × 0.3 — where does the decimal point go? (a) 0.00246 (b) 0.0246 (c) 0.246 (d) 2.46
31. 31.6.2 × 4.3 — where does the decimal point go? (a) 26.66 (b) 2.666 (c) 266.6 (d) 0.2666
32. 32.0.96 × 0.4 — where does the decimal point go? (a) 0.00384 (b) 0.0384 (c) 3.84 (d) 0.384
33. 33.0.37 × 3 — where does the decimal point go? (a) 1.11 (b) 11.1 (c) 0.111 (d) 0.0111
34. 34.7.5 × 2.1 — where does the decimal point go? (a) 15.75 (b) 1.575 (c) 157.5 (d) 0.1575
35. 35.5.8 × 2.8 — where does the decimal point go? (a) 0.1624 (b) 162.4 (c) 1.624 (d) 16.24
36. 36.0.93 × 2.8 — where does the decimal point go? (a) 2.604 (b) 0.2604 (c) 0.02604 (d) 26.04
37. 37.2.3 × 3.4 — where does the decimal point go? (a) 7.82 (b) 0.782 (c) 0.0782 (d) 78.2
38. 38.6.6 × 41 — where does the decimal point go? (a) 270.6 (b) 27.06 (c) 2.706 (d) 2706
39. 39.8.8 × 3.1 — where does the decimal point go? (a) 272.8 (b) 2.728 (c) 0.2728 (d) 27.28
40. 40.0.97 × 9 — where does the decimal point go? (a) 8.73 (b) 0.873 (c) 0.0873 (d) 87.3

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