Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 308 · 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. 1.3.7 × 3.7 — where does the decimal point go? (a) 1.369 (b) 0.1369 (c) 13.69 (d) 136.9
2. 2.0.86 × 4 — where does the decimal point go? (a) 0.344 (b) 0.0344 (c) 3.44 (d) 34.4
3. 3.3.3 × 2 — where does the decimal point go? (a) 0.66 (b) 0.066 (c) 66 (d) 6.6
4. 4.5.9 × 0.9 — where does the decimal point go? (a) 0.531 (b) 5.31 (c) 0.0531 (d) 53.1
5. 5.0.25 × 0.3 — where does the decimal point go? (a) 0.0075 (b) 0.00075 (c) 0.75 (d) 0.075
6. 6.0.99 × 4.6 — where does the decimal point go? (a) 45.54 (b) 0.4554 (c) 0.04554 (d) 4.554
7. 7.0.25 × 4.3 — where does the decimal point go? (a) 0.01075 (b) 10.75 (c) 1.075 (d) 0.1075
8. 8.4.4 × 0.4 — where does the decimal point go? (a) 0.176 (b) 0.0176 (c) 1.76 (d) 17.6
9. 9.0.27 × 7 — where does the decimal point go? (a) 0.189 (b) 1.89 (c) 0.0189 (d) 18.9
10. 10.2.1 × 0.5 — where does the decimal point go? (a) 1.05 (b) 0.0105 (c) 0.105 (d) 10.5
11. 11.2.6 × 0.8 — where does the decimal point go? (a) 0.0208 (b) 0.208 (c) 20.8 (d) 2.08
12. 12.0.95 × 5 — where does the decimal point go? (a) 0.0475 (b) 0.475 (c) 47.5 (d) 4.75
13. 13.0.98 × 2.1 — where does the decimal point go? (a) 20.58 (b) 0.02058 (c) 2.058 (d) 0.2058
14. 14.0.67 × 0.6 — where does the decimal point go? (a) 0.0402 (b) 0.00402 (c) 0.402 (d) 4.02
15. 15.0.58 × 8 — where does the decimal point go? (a) 46.4 (b) 4.64 (c) 0.0464 (d) 0.464
16. 16.7.9 × 2.9 — where does the decimal point go? (a) 22.91 (b) 2.291 (c) 0.2291 (d) 229.1
17. 17.0.44 × 0.2 — where does the decimal point go? (a) 0.088 (b) 0.88 (c) 0.0088 (d) 0.00088
18. 18.4.4 × 6 — where does the decimal point go? (a) 264 (b) 2.64 (c) 26.4 (d) 0.264
19. 19.0.54 × 0.3 — where does the decimal point go? (a) 1.62 (b) 0.00162 (c) 0.0162 (d) 0.162
20. 20.0.17 × 0.6 — where does the decimal point go? (a) 0.102 (b) 0.0102 (c) 0.00102 (d) 1.02
21. 21.0.32 × 2.6 — where does the decimal point go? (a) 8.32 (b) 0.00832 (c) 0.0832 (d) 0.832
22. 22.2.2 × 0.3 — where does the decimal point go? (a) 0.066 (b) 6.6 (c) 0.0066 (d) 0.66
23. 23.3.3 × 37 — where does the decimal point go? (a) 12.21 (b) 1.221 (c) 1221 (d) 122.1
24. 24.0.68 × 2.8 — where does the decimal point go? (a) 1.904 (b) 19.04 (c) 0.1904 (d) 0.01904
25. 25.0.81 × 29 — where does the decimal point go? (a) 23.49 (b) 0.2349 (c) 2.349 (d) 234.9
26. 26.0.92 × 7 — where does the decimal point go? (a) 64.4 (b) 6.44 (c) 0.644 (d) 0.0644
27. 27.0.22 × 3 — where does the decimal point go? (a) 0.66 (b) 0.0066 (c) 6.6 (d) 0.066
28. 28.3.1 × 2.4 — where does the decimal point go? (a) 0.744 (b) 7.44 (c) 0.0744 (d) 74.4
29. 29.7.8 × 3.1 — where does the decimal point go? (a) 0.2418 (b) 241.8 (c) 2.418 (d) 24.18
30. 30.0.32 × 0.3 — where does the decimal point go? (a) 0.0096 (b) 0.00096 (c) 0.096 (d) 0.96
31. 31.0.83 × 46 — where does the decimal point go? (a) 3.818 (b) 38.18 (c) 381.8 (d) 0.3818
32. 32.1.4 × 4 — where does the decimal point go? (a) 56 (b) 0.56 (c) 5.6 (d) 0.056
33. 33.5.7 × 14 — where does the decimal point go? (a) 798 (b) 0.798 (c) 7.98 (d) 79.8
34. 34.2.7 × 44 — where does the decimal point go? (a) 1.188 (b) 1188 (c) 118.8 (d) 11.88
35. 35.0.42 × 0.3 — where does the decimal point go? (a) 0.126 (b) 0.0126 (c) 0.00126 (d) 1.26
36. 36.9.4 × 43 — where does the decimal point go? (a) 4042 (b) 4.042 (c) 404.2 (d) 40.42
37. 37.4.3 × 1.8 — where does the decimal point go? (a) 0.774 (b) 77.4 (c) 0.0774 (d) 7.74
38. 38.0.54 × 0.2 — where does the decimal point go? (a) 1.08 (b) 0.108 (c) 0.0108 (d) 0.00108
39. 39.1.6 × 3.7 — where does the decimal point go? (a) 0.0592 (b) 0.592 (c) 59.2 (d) 5.92
40. 40.1.9 × 0.2 — where does the decimal point go? (a) 0.038 (b) 0.0038 (c) 0.38 (d) 3.8

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