Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 566 · 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. 1.0.37 × 3.4 — where does the decimal point go? (a) 1.258 (b) 0.1258 (c) 12.58 (d) 0.01258
2. 2.5.2 × 2 — where does the decimal point go? (a) 1.04 (b) 104 (c) 0.104 (d) 10.4
3. 3.7.4 × 0.8 — where does the decimal point go? (a) 0.0592 (b) 59.2 (c) 0.592 (d) 5.92
4. 4.2.9 × 4 — where does the decimal point go? (a) 116 (b) 1.16 (c) 0.116 (d) 11.6
5. 5.0.96 × 0.8 — where does the decimal point go? (a) 0.0768 (b) 0.768 (c) 7.68 (d) 0.00768
6. 6.6.8 × 4.1 — where does the decimal point go? (a) 278.8 (b) 27.88 (c) 0.2788 (d) 2.788
7. 7.1.7 × 0.9 — where does the decimal point go? (a) 0.153 (b) 0.0153 (c) 15.3 (d) 1.53
8. 8.0.43 × 2.9 — where does the decimal point go? (a) 12.47 (b) 0.01247 (c) 0.1247 (d) 1.247
9. 9.0.33 × 0.8 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 0.0264 (d) 0.00264
10. 10.0.38 × 22 — where does the decimal point go? (a) 0.836 (b) 83.6 (c) 0.0836 (d) 8.36
11. 11.0.78 × 3.4 — where does the decimal point go? (a) 0.02652 (b) 0.2652 (c) 26.52 (d) 2.652
12. 12.0.63 × 3.1 — where does the decimal point go? (a) 0.1953 (b) 1.953 (c) 0.01953 (d) 19.53
13. 13.0.61 × 0.3 — where does the decimal point go? (a) 1.83 (b) 0.0183 (c) 0.00183 (d) 0.183
14. 14.6.9 × 0.4 — where does the decimal point go? (a) 2.76 (b) 0.276 (c) 27.6 (d) 0.0276
15. 15.8.1 × 3 — where does the decimal point go? (a) 0.243 (b) 24.3 (c) 243 (d) 2.43
16. 16.3.6 × 1.3 — where does the decimal point go? (a) 0.0468 (b) 4.68 (c) 0.468 (d) 46.8
17. 17.0.82 × 0.6 — where does the decimal point go? (a) 0.00492 (b) 0.492 (c) 0.0492 (d) 4.92
18. 18.7.9 × 3.9 — where does the decimal point go? (a) 3.081 (b) 30.81 (c) 308.1 (d) 0.3081
19. 19.6.5 × 0.5 — where does the decimal point go? (a) 0.0325 (b) 3.25 (c) 0.325 (d) 32.5
20. 20.0.25 × 4.3 — where does the decimal point go? (a) 1.075 (b) 0.01075 (c) 0.1075 (d) 10.75
21. 21.5.8 × 18 — where does the decimal point go? (a) 10.44 (b) 1.044 (c) 1044 (d) 104.4
22. 22.0.51 × 0.5 — where does the decimal point go? (a) 2.55 (b) 0.0255 (c) 0.00255 (d) 0.255
23. 23.0.19 × 0.5 — where does the decimal point go? (a) 0.095 (b) 0.0095 (c) 0.95 (d) 0.00095
24. 24.0.89 × 1.2 — where does the decimal point go? (a) 0.01068 (b) 0.1068 (c) 10.68 (d) 1.068
25. 25.0.76 × 0.3 — where does the decimal point go? (a) 0.0228 (b) 2.28 (c) 0.00228 (d) 0.228
26. 26.0.59 × 0.9 — where does the decimal point go? (a) 0.531 (b) 0.00531 (c) 5.31 (d) 0.0531
27. 27.7.7 × 0.7 — where does the decimal point go? (a) 5.39 (b) 53.9 (c) 0.539 (d) 0.0539
28. 28.0.26 × 7 — where does the decimal point go? (a) 18.2 (b) 0.182 (c) 0.0182 (d) 1.82
29. 29.9.3 × 0.9 — where does the decimal point go? (a) 8.37 (b) 0.837 (c) 83.7 (d) 0.0837
30. 30.0.53 × 38 — where does the decimal point go? (a) 0.2014 (b) 201.4 (c) 2.014 (d) 20.14
31. 31.9.8 × 0.9 — where does the decimal point go? (a) 0.882 (b) 8.82 (c) 0.0882 (d) 88.2
32. 32.0.96 × 0.9 — where does the decimal point go? (a) 0.864 (b) 8.64 (c) 0.00864 (d) 0.0864
33. 33.8.8 × 3.8 — where does the decimal point go? (a) 0.3344 (b) 33.44 (c) 3.344 (d) 334.4
34. 34.1.4 × 0.9 — where does the decimal point go? (a) 1.26 (b) 0.0126 (c) 12.6 (d) 0.126
35. 35.5.7 × 3 — where does the decimal point go? (a) 1.71 (b) 17.1 (c) 0.171 (d) 171
36. 36.0.29 × 3 — where does the decimal point go? (a) 0.87 (b) 0.0087 (c) 8.7 (d) 0.087
37. 37.3.1 × 0.9 — where does the decimal point go? (a) 0.279 (b) 27.9 (c) 0.0279 (d) 2.79
38. 38.7.7 × 2 — where does the decimal point go? (a) 1.54 (b) 15.4 (c) 0.154 (d) 154
39. 39.0.58 × 7 — where does the decimal point go? (a) 0.406 (b) 4.06 (c) 40.6 (d) 0.0406
40. 40.2.1 × 37 — where does the decimal point go? (a) 77.7 (b) 0.777 (c) 7.77 (d) 777

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