Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 95 · 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. 1.4.1 × 4.9 — where does the decimal point go? (a) 2.009 (b) 20.09 (c) 0.2009 (d) 200.9
2. 2.0.61 × 2 — where does the decimal point go? (a) 1.22 (b) 0.122 (c) 0.0122 (d) 12.2
3. 3.4.8 × 0.8 — where does the decimal point go? (a) 0.0384 (b) 0.384 (c) 38.4 (d) 3.84
4. 4.6.5 × 0.9 — where does the decimal point go? (a) 0.585 (b) 5.85 (c) 58.5 (d) 0.0585
5. 5.6.3 × 0.7 — where does the decimal point go? (a) 0.441 (b) 0.0441 (c) 4.41 (d) 44.1
6. 6.6.1 × 0.9 — where does the decimal point go? (a) 54.9 (b) 0.0549 (c) 5.49 (d) 0.549
7. 7.4.8 × 4.9 — where does the decimal point go? (a) 0.2352 (b) 23.52 (c) 235.2 (d) 2.352
8. 8.0.36 × 2.1 — where does the decimal point go? (a) 7.56 (b) 0.00756 (c) 0.756 (d) 0.0756
9. 9.5.3 × 0.3 — where does the decimal point go? (a) 1.59 (b) 0.159 (c) 15.9 (d) 0.0159
10. 10.0.71 × 1.1 — where does the decimal point go? (a) 7.81 (b) 0.0781 (c) 0.00781 (d) 0.781
11. 11.0.83 × 35 — where does the decimal point go? (a) 29.05 (b) 2.905 (c) 290.5 (d) 0.2905
12. 12.7.8 × 16 — where does the decimal point go? (a) 12.48 (b) 1248 (c) 124.8 (d) 1.248
13. 13.7.7 × 28 — where does the decimal point go? (a) 2156 (b) 215.6 (c) 2.156 (d) 21.56
14. 14.7.2 × 0.4 — where does the decimal point go? (a) 0.0288 (b) 28.8 (c) 2.88 (d) 0.288
15. 15.8.5 × 49 — where does the decimal point go? (a) 416.5 (b) 41.65 (c) 4165 (d) 4.165
16. 16.3.2 × 28 — where does the decimal point go? (a) 8.96 (b) 89.6 (c) 896 (d) 0.896
17. 17.6.1 × 0.7 — where does the decimal point go? (a) 42.7 (b) 0.427 (c) 0.0427 (d) 4.27
18. 18.0.38 × 9 — where does the decimal point go? (a) 34.2 (b) 0.342 (c) 3.42 (d) 0.0342
19. 19.0.36 × 0.8 — where does the decimal point go? (a) 2.88 (b) 0.288 (c) 0.0288 (d) 0.00288
20. 20.0.27 × 0.2 — where does the decimal point go? (a) 0.00054 (b) 0.0054 (c) 0.054 (d) 0.54
21. 21.0.85 × 0.7 — where does the decimal point go? (a) 0.595 (b) 0.0595 (c) 5.95 (d) 0.00595
22. 22.0.55 × 13 — where does the decimal point go? (a) 71.5 (b) 0.0715 (c) 0.715 (d) 7.15
23. 23.6.2 × 1.2 — where does the decimal point go? (a) 7.44 (b) 0.744 (c) 0.0744 (d) 74.4
24. 24.0.14 × 41 — where does the decimal point go? (a) 5.74 (b) 0.574 (c) 57.4 (d) 0.0574
25. 25.0.59 × 3 — where does the decimal point go? (a) 1.77 (b) 0.177 (c) 17.7 (d) 0.0177
26. 26.0.17 × 16 — where does the decimal point go? (a) 0.272 (b) 2.72 (c) 27.2 (d) 0.0272
27. 27.1.8 × 6 — where does the decimal point go? (a) 10.8 (b) 0.108 (c) 1.08 (d) 108
28. 28.0.96 × 2.1 — where does the decimal point go? (a) 0.02016 (b) 0.2016 (c) 20.16 (d) 2.016
29. 29.2.3 × 18 — where does the decimal point go? (a) 4.14 (b) 0.414 (c) 41.4 (d) 414
30. 30.0.33 × 0.2 — where does the decimal point go? (a) 0.0066 (b) 0.00066 (c) 0.66 (d) 0.066
31. 31.0.61 × 3 — where does the decimal point go? (a) 1.83 (b) 0.0183 (c) 0.183 (d) 18.3
32. 32.0.43 × 26 — where does the decimal point go? (a) 111.8 (b) 1.118 (c) 11.18 (d) 0.1118
33. 33.5.2 × 1.7 — where does the decimal point go? (a) 0.884 (b) 8.84 (c) 0.0884 (d) 88.4
34. 34.0.91 × 46 — where does the decimal point go? (a) 418.6 (b) 4.186 (c) 41.86 (d) 0.4186
35. 35.0.38 × 2.8 — where does the decimal point go? (a) 0.1064 (b) 1.064 (c) 0.01064 (d) 10.64
36. 36.0.81 × 0.7 — where does the decimal point go? (a) 0.567 (b) 5.67 (c) 0.00567 (d) 0.0567
37. 37.0.86 × 1.4 — where does the decimal point go? (a) 0.01204 (b) 0.1204 (c) 1.204 (d) 12.04
38. 38.0.45 × 5 — where does the decimal point go? (a) 22.5 (b) 2.25 (c) 0.0225 (d) 0.225
39. 39.0.24 × 4 — where does the decimal point go? (a) 0.96 (b) 0.096 (c) 9.6 (d) 0.0096
40. 40.3.3 × 4.3 — where does the decimal point go? (a) 141.9 (b) 1.419 (c) 14.19 (d) 0.1419

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