Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 794 · 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. 1.0.42 × 0.6 — where does the decimal point go? (a) 0.0252 (b) 0.252 (c) 2.52 (d) 0.00252
2. 2.6.7 × 9 — where does the decimal point go? (a) 6.03 (b) 0.603 (c) 60.3 (d) 603
3. 3.5.7 × 7 — where does the decimal point go? (a) 0.399 (b) 399 (c) 39.9 (d) 3.99
4. 4.7.4 × 7 — where does the decimal point go? (a) 0.518 (b) 5.18 (c) 518 (d) 51.8
5. 5.7.7 × 34 — where does the decimal point go? (a) 2618 (b) 261.8 (c) 26.18 (d) 2.618
6. 6.0.83 × 42 — where does the decimal point go? (a) 348.6 (b) 0.3486 (c) 3.486 (d) 34.86
7. 7.0.66 × 7 — where does the decimal point go? (a) 4.62 (b) 0.462 (c) 46.2 (d) 0.0462
8. 8.2.4 × 3.9 — where does the decimal point go? (a) 0.936 (b) 9.36 (c) 93.6 (d) 0.0936
9. 9.0.79 × 3.5 — where does the decimal point go? (a) 2.765 (b) 0.02765 (c) 0.2765 (d) 27.65
10. 10.7.3 × 0.3 — where does the decimal point go? (a) 0.219 (b) 2.19 (c) 21.9 (d) 0.0219
11. 11.0.46 × 22 — where does the decimal point go? (a) 0.1012 (b) 1.012 (c) 10.12 (d) 101.2
12. 12.3.3 × 6 — where does the decimal point go? (a) 19.8 (b) 0.198 (c) 1.98 (d) 198
13. 13.5.4 × 0.2 — where does the decimal point go? (a) 1.08 (b) 10.8 (c) 0.108 (d) 0.0108
14. 14.0.87 × 3.2 — where does the decimal point go? (a) 27.84 (b) 0.2784 (c) 2.784 (d) 0.02784
15. 15.3.4 × 24 — where does the decimal point go? (a) 816 (b) 0.816 (c) 81.6 (d) 8.16
16. 16.0.16 × 0.3 — where does the decimal point go? (a) 0.00048 (b) 0.048 (c) 0.48 (d) 0.0048
17. 17.0.84 × 6 — where does the decimal point go? (a) 50.4 (b) 5.04 (c) 0.0504 (d) 0.504
18. 18.9.9 × 34 — where does the decimal point go? (a) 33.66 (b) 3366 (c) 3.366 (d) 336.6
19. 19.2.8 × 0.2 — where does the decimal point go? (a) 5.6 (b) 0.0056 (c) 0.56 (d) 0.056
20. 20.7.8 × 2 — where does the decimal point go? (a) 0.156 (b) 1.56 (c) 15.6 (d) 156
21. 21.0.98 × 3.3 — where does the decimal point go? (a) 0.03234 (b) 32.34 (c) 0.3234 (d) 3.234
22. 22.4.4 × 39 — where does the decimal point go? (a) 1.716 (b) 17.16 (c) 171.6 (d) 1716
23. 23.0.39 × 0.2 — where does the decimal point go? (a) 0.078 (b) 0.0078 (c) 0.78 (d) 0.00078
24. 24.8.5 × 0.3 — where does the decimal point go? (a) 0.255 (b) 2.55 (c) 25.5 (d) 0.0255
25. 25.8.9 × 7 — where does the decimal point go? (a) 62.3 (b) 6.23 (c) 0.623 (d) 623
26. 26.0.23 × 8 — where does the decimal point go? (a) 0.184 (b) 0.0184 (c) 18.4 (d) 1.84
27. 27.0.32 × 6 — where does the decimal point go? (a) 0.192 (b) 1.92 (c) 19.2 (d) 0.0192
28. 28.3.4 × 23 — where does the decimal point go? (a) 7.82 (b) 782 (c) 78.2 (d) 0.782
29. 29.4.9 × 0.9 — where does the decimal point go? (a) 0.441 (b) 4.41 (c) 44.1 (d) 0.0441
30. 30.5.8 × 9 — where does the decimal point go? (a) 52.2 (b) 5.22 (c) 0.522 (d) 522
31. 31.1.2 × 6 — where does the decimal point go? (a) 0.072 (b) 72 (c) 7.2 (d) 0.72
32. 32.4.9 × 0.4 — where does the decimal point go? (a) 1.96 (b) 0.196 (c) 19.6 (d) 0.0196
33. 33.0.71 × 0.2 — where does the decimal point go? (a) 0.142 (b) 0.0142 (c) 0.00142 (d) 1.42
34. 34.4.3 × 21 — where does the decimal point go? (a) 903 (b) 9.03 (c) 0.903 (d) 90.3
35. 35.3.8 × 0.6 — where does the decimal point go? (a) 0.0228 (b) 2.28 (c) 22.8 (d) 0.228
36. 36.0.42 × 24 — where does the decimal point go? (a) 10.08 (b) 0.1008 (c) 100.8 (d) 1.008
37. 37.0.54 × 6 — where does the decimal point go? (a) 0.324 (b) 0.0324 (c) 3.24 (d) 32.4
38. 38.0.97 × 2 — where does the decimal point go? (a) 0.194 (b) 19.4 (c) 0.0194 (d) 1.94
39. 39.0.92 × 12 — where does the decimal point go? (a) 1.104 (b) 11.04 (c) 0.1104 (d) 110.4
40. 40.0.28 × 7 — where does the decimal point go? (a) 0.196 (b) 1.96 (c) 19.6 (d) 0.0196

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