Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 353 · 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. 1.1.5 × 0.5 — where does the decimal point go? (a) 7.5 (b) 0.075 (c) 0.75 (d) 0.0075
2. 2.6.2 × 3 — where does the decimal point go? (a) 18.6 (b) 1.86 (c) 186 (d) 0.186
3. 3.7.6 × 4 — where does the decimal point go? (a) 0.304 (b) 304 (c) 30.4 (d) 3.04
4. 4.2.7 × 1.8 — where does the decimal point go? (a) 48.6 (b) 0.0486 (c) 4.86 (d) 0.486
5. 5.1.6 × 3 — where does the decimal point go? (a) 0.48 (b) 4.8 (c) 48 (d) 0.048
6. 6.0.46 × 2.4 — where does the decimal point go? (a) 0.01104 (b) 0.1104 (c) 11.04 (d) 1.104
7. 7.7.2 × 3 — where does the decimal point go? (a) 2.16 (b) 216 (c) 0.216 (d) 21.6
8. 8.0.29 × 0.3 — where does the decimal point go? (a) 0.87 (b) 0.087 (c) 0.00087 (d) 0.0087
9. 9.2.1 × 2.1 — where does the decimal point go? (a) 0.0441 (b) 4.41 (c) 44.1 (d) 0.441
10. 10.2.2 × 4 — where does the decimal point go? (a) 8.8 (b) 0.088 (c) 88 (d) 0.88
11. 11.2.9 × 25 — where does the decimal point go? (a) 72.5 (b) 0.725 (c) 7.25 (d) 725
12. 12.0.42 × 46 — where does the decimal point go? (a) 1.932 (b) 0.1932 (c) 193.2 (d) 19.32
13. 13.0.85 × 0.3 — where does the decimal point go? (a) 0.255 (b) 2.55 (c) 0.00255 (d) 0.0255
14. 14.4.1 × 14 — where does the decimal point go? (a) 0.574 (b) 5.74 (c) 57.4 (d) 574
15. 15.8.2 × 38 — where does the decimal point go? (a) 3.116 (b) 311.6 (c) 3116 (d) 31.16
16. 16.0.51 × 22 — where does the decimal point go? (a) 112.2 (b) 0.1122 (c) 1.122 (d) 11.22
17. 17.0.66 × 2 — where does the decimal point go? (a) 0.0132 (b) 1.32 (c) 0.132 (d) 13.2
18. 18.5.6 × 0.8 — where does the decimal point go? (a) 0.448 (b) 0.0448 (c) 44.8 (d) 4.48
19. 19.0.62 × 38 — where does the decimal point go? (a) 0.2356 (b) 2.356 (c) 23.56 (d) 235.6
20. 20.9.9 × 46 — where does the decimal point go? (a) 4554 (b) 455.4 (c) 45.54 (d) 4.554
21. 21.0.43 × 23 — where does the decimal point go? (a) 98.9 (b) 9.89 (c) 0.0989 (d) 0.989
22. 22.9.9 × 38 — where does the decimal point go? (a) 37.62 (b) 3.762 (c) 376.2 (d) 3762
23. 23.6.2 × 3.7 — where does the decimal point go? (a) 0.2294 (b) 22.94 (c) 229.4 (d) 2.294
24. 24.3.2 × 8 — where does the decimal point go? (a) 0.256 (b) 256 (c) 2.56 (d) 25.6
25. 25.0.78 × 2 — where does the decimal point go? (a) 0.156 (b) 0.0156 (c) 1.56 (d) 15.6
26. 26.0.36 × 9 — where does the decimal point go? (a) 0.324 (b) 0.0324 (c) 32.4 (d) 3.24
27. 27.0.81 × 2.1 — where does the decimal point go? (a) 1.701 (b) 0.01701 (c) 17.01 (d) 0.1701
28. 28.9.4 × 8 — where does the decimal point go? (a) 75.2 (b) 752 (c) 0.752 (d) 7.52
29. 29.4.4 × 48 — where does the decimal point go? (a) 21.12 (b) 2.112 (c) 211.2 (d) 2112
30. 30.0.23 × 1.7 — where does the decimal point go? (a) 0.391 (b) 0.00391 (c) 0.0391 (d) 3.91
31. 31.9.4 × 0.9 — where does the decimal point go? (a) 84.6 (b) 0.846 (c) 0.0846 (d) 8.46
32. 32.0.31 × 4.3 — where does the decimal point go? (a) 1.333 (b) 0.1333 (c) 13.33 (d) 0.01333
33. 33.1.8 × 0.7 — where does the decimal point go? (a) 0.0126 (b) 12.6 (c) 1.26 (d) 0.126
34. 34.0.31 × 0.2 — where does the decimal point go? (a) 0.00062 (b) 0.062 (c) 0.0062 (d) 0.62
35. 35.0.27 × 0.3 — where does the decimal point go? (a) 0.00081 (b) 0.081 (c) 0.81 (d) 0.0081
36. 36.6.4 × 0.4 — where does the decimal point go? (a) 25.6 (b) 0.256 (c) 2.56 (d) 0.0256
37. 37.9.9 × 5 — where does the decimal point go? (a) 0.495 (b) 495 (c) 49.5 (d) 4.95
38. 38.8.6 × 32 — where does the decimal point go? (a) 27.52 (b) 2.752 (c) 275.2 (d) 2752
39. 39.4.8 × 0.9 — where does the decimal point go? (a) 0.432 (b) 43.2 (c) 0.0432 (d) 4.32
40. 40.2.1 × 8 — where does the decimal point go? (a) 168 (b) 1.68 (c) 16.8 (d) 0.168

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