Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 389 · 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. 1.8.3 × 0.5 — where does the decimal point go? (a) 0.0415 (b) 4.15 (c) 41.5 (d) 0.415
2. 2.0.12 × 0.7 — where does the decimal point go? (a) 0.00084 (b) 0.084 (c) 0.0084 (d) 0.84
3. 3.6.3 × 0.9 — where does the decimal point go? (a) 5.67 (b) 0.567 (c) 56.7 (d) 0.0567
4. 4.1.6 × 6 — where does the decimal point go? (a) 9.6 (b) 0.096 (c) 0.96 (d) 96
5. 5.0.13 × 1.8 — where does the decimal point go? (a) 0.0234 (b) 2.34 (c) 0.234 (d) 0.00234
6. 6.2.1 × 4.6 — where does the decimal point go? (a) 0.0966 (b) 9.66 (c) 96.6 (d) 0.966
7. 7.4.3 × 3.5 — where does the decimal point go? (a) 1.505 (b) 15.05 (c) 0.1505 (d) 150.5
8. 8.1.2 × 3.9 — where does the decimal point go? (a) 4.68 (b) 46.8 (c) 0.0468 (d) 0.468
9. 9.0.13 × 45 — where does the decimal point go? (a) 5.85 (b) 0.585 (c) 0.0585 (d) 58.5
10. 10.9.7 × 0.4 — where does the decimal point go? (a) 3.88 (b) 38.8 (c) 0.0388 (d) 0.388
11. 11.8.4 × 12 — where does the decimal point go? (a) 100.8 (b) 1.008 (c) 1008 (d) 10.08
12. 12.0.16 × 1.6 — where does the decimal point go? (a) 0.00256 (b) 0.256 (c) 0.0256 (d) 2.56
13. 13.8.3 × 28 — where does the decimal point go? (a) 232.4 (b) 2324 (c) 2.324 (d) 23.24
14. 14.0.71 × 2.1 — where does the decimal point go? (a) 0.01491 (b) 0.1491 (c) 14.91 (d) 1.491
15. 15.0.36 × 49 — where does the decimal point go? (a) 17.64 (b) 1.764 (c) 176.4 (d) 0.1764
16. 16.0.15 × 0.9 — where does the decimal point go? (a) 0.135 (b) 0.00135 (c) 1.35 (d) 0.0135
17. 17.0.46 × 0.3 — where does the decimal point go? (a) 0.138 (b) 0.00138 (c) 1.38 (d) 0.0138
18. 18.7.1 × 1.5 — where does the decimal point go? (a) 0.1065 (b) 1.065 (c) 106.5 (d) 10.65
19. 19.8.2 × 2 — where does the decimal point go? (a) 164 (b) 0.164 (c) 16.4 (d) 1.64
20. 20.7.1 × 0.7 — where does the decimal point go? (a) 0.497 (b) 4.97 (c) 0.0497 (d) 49.7
21. 21.0.98 × 0.4 — where does the decimal point go? (a) 0.0392 (b) 0.392 (c) 0.00392 (d) 3.92
22. 22.1.8 × 3 — where does the decimal point go? (a) 5.4 (b) 54 (c) 0.054 (d) 0.54
23. 23.0.33 × 26 — where does the decimal point go? (a) 85.8 (b) 0.858 (c) 0.0858 (d) 8.58
24. 24.0.35 × 39 — where does the decimal point go? (a) 1.365 (b) 13.65 (c) 136.5 (d) 0.1365
25. 25.0.53 × 3 — where does the decimal point go? (a) 1.59 (b) 0.159 (c) 0.0159 (d) 15.9
26. 26.0.99 × 42 — where does the decimal point go? (a) 4.158 (b) 41.58 (c) 415.8 (d) 0.4158
27. 27.0.76 × 0.8 — where does the decimal point go? (a) 0.0608 (b) 0.608 (c) 0.00608 (d) 6.08
28. 28.0.72 × 2 — where does the decimal point go? (a) 0.144 (b) 14.4 (c) 1.44 (d) 0.0144
29. 29.0.76 × 1.2 — where does the decimal point go? (a) 0.00912 (b) 0.0912 (c) 9.12 (d) 0.912
30. 30.0.54 × 38 — where does the decimal point go? (a) 20.52 (b) 205.2 (c) 0.2052 (d) 2.052
31. 31.1.5 × 2.9 — where does the decimal point go? (a) 0.0435 (b) 0.435 (c) 43.5 (d) 4.35
32. 32.6.6 × 3.1 — where does the decimal point go? (a) 204.6 (b) 20.46 (c) 2.046 (d) 0.2046
33. 33.4.2 × 42 — where does the decimal point go? (a) 1764 (b) 1.764 (c) 176.4 (d) 17.64
34. 34.1.7 × 6 — where does the decimal point go? (a) 10.2 (b) 0.102 (c) 1.02 (d) 102
35. 35.0.32 × 1.9 — where does the decimal point go? (a) 0.608 (b) 0.0608 (c) 6.08 (d) 0.00608
36. 36.0.99 × 46 — where does the decimal point go? (a) 0.4554 (b) 4.554 (c) 45.54 (d) 455.4
37. 37.3.3 × 4 — where does the decimal point go? (a) 0.132 (b) 13.2 (c) 132 (d) 1.32
38. 38.3.2 × 1.4 — where does the decimal point go? (a) 4.48 (b) 0.0448 (c) 44.8 (d) 0.448
39. 39.0.21 × 6 — where does the decimal point go? (a) 12.6 (b) 0.126 (c) 0.0126 (d) 1.26
40. 40.6.6 × 0.7 — where does the decimal point go? (a) 0.0462 (b) 0.462 (c) 46.2 (d) 4.62

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