Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 124 · 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. 1.6.6 × 3.9 — where does the decimal point go? (a) 257.4 (b) 2.574 (c) 25.74 (d) 0.2574
2. 2.3.6 × 8 — where does the decimal point go? (a) 288 (b) 2.88 (c) 28.8 (d) 0.288
3. 3.6.2 × 0.6 — where does the decimal point go? (a) 0.0372 (b) 3.72 (c) 37.2 (d) 0.372
4. 4.9.4 × 2.7 — where does the decimal point go? (a) 2.538 (b) 25.38 (c) 253.8 (d) 0.2538
5. 5.0.13 × 0.6 — where does the decimal point go? (a) 0.0078 (b) 0.78 (c) 0.00078 (d) 0.078
6. 6.0.39 × 5 — where does the decimal point go? (a) 1.95 (b) 0.0195 (c) 0.195 (d) 19.5
7. 7.9.7 × 46 — where does the decimal point go? (a) 4462 (b) 4.462 (c) 446.2 (d) 44.62
8. 8.1.2 × 3 — where does the decimal point go? (a) 3.6 (b) 0.036 (c) 0.36 (d) 36
9. 9.2.2 × 0.2 — where does the decimal point go? (a) 0.0044 (b) 0.44 (c) 4.4 (d) 0.044
10. 10.0.13 × 36 — where does the decimal point go? (a) 46.8 (b) 0.468 (c) 4.68 (d) 0.0468
11. 11.0.22 × 3 — where does the decimal point go? (a) 6.6 (b) 0.066 (c) 0.0066 (d) 0.66
12. 12.0.89 × 4.7 — where does the decimal point go? (a) 0.4183 (b) 41.83 (c) 4.183 (d) 0.04183
13. 13.0.54 × 0.9 — where does the decimal point go? (a) 0.00486 (b) 0.486 (c) 4.86 (d) 0.0486
14. 14.9.9 × 23 — where does the decimal point go? (a) 227.7 (b) 2277 (c) 22.77 (d) 2.277
15. 15.0.83 × 1.7 — where does the decimal point go? (a) 0.1411 (b) 0.01411 (c) 14.11 (d) 1.411
16. 16.2.9 × 9 — where does the decimal point go? (a) 0.261 (b) 261 (c) 26.1 (d) 2.61
17. 17.0.16 × 9 — where does the decimal point go? (a) 14.4 (b) 0.144 (c) 0.0144 (d) 1.44
18. 18.0.59 × 3.2 — where does the decimal point go? (a) 0.01888 (b) 18.88 (c) 0.1888 (d) 1.888
19. 19.0.51 × 2.1 — where does the decimal point go? (a) 1.071 (b) 0.01071 (c) 10.71 (d) 0.1071
20. 20.1.2 × 39 — where does the decimal point go? (a) 4.68 (b) 468 (c) 46.8 (d) 0.468
21. 21.0.19 × 5 — where does the decimal point go? (a) 0.95 (b) 0.095 (c) 9.5 (d) 0.0095
22. 22.0.27 × 7 — where does the decimal point go? (a) 18.9 (b) 0.0189 (c) 1.89 (d) 0.189
23. 23.0.27 × 14 — where does the decimal point go? (a) 37.8 (b) 0.378 (c) 3.78 (d) 0.0378
24. 24.0.23 × 18 — where does the decimal point go? (a) 0.414 (b) 4.14 (c) 41.4 (d) 0.0414
25. 25.0.17 × 2.3 — where does the decimal point go? (a) 3.91 (b) 0.391 (c) 0.0391 (d) 0.00391
26. 26.0.71 × 2.9 — where does the decimal point go? (a) 20.59 (b) 2.059 (c) 0.2059 (d) 0.02059
27. 27.2.4 × 3.7 — where does the decimal point go? (a) 88.8 (b) 8.88 (c) 0.888 (d) 0.0888
28. 28.6.4 × 4.4 — where does the decimal point go? (a) 2.816 (b) 28.16 (c) 281.6 (d) 0.2816
29. 29.2.5 × 3 — where does the decimal point go? (a) 75 (b) 0.75 (c) 7.5 (d) 0.075
30. 30.5.3 × 29 — where does the decimal point go? (a) 15.37 (b) 153.7 (c) 1.537 (d) 1537
31. 31.7.7 × 0.9 — where does the decimal point go? (a) 6.93 (b) 69.3 (c) 0.693 (d) 0.0693
32. 32.0.13 × 1.2 — where does the decimal point go? (a) 1.56 (b) 0.00156 (c) 0.0156 (d) 0.156
33. 33.0.53 × 3 — where does the decimal point go? (a) 0.159 (b) 15.9 (c) 1.59 (d) 0.0159
34. 34.2.9 × 22 — where does the decimal point go? (a) 63.8 (b) 638 (c) 6.38 (d) 0.638
35. 35.7.2 × 2.8 — where does the decimal point go? (a) 2.016 (b) 201.6 (c) 0.2016 (d) 20.16
36. 36.2.3 × 3 — where does the decimal point go? (a) 6.9 (b) 0.69 (c) 0.069 (d) 69
37. 37.5.6 × 9 — where does the decimal point go? (a) 504 (b) 50.4 (c) 0.504 (d) 5.04
38. 38.0.72 × 2.7 — where does the decimal point go? (a) 0.1944 (b) 0.01944 (c) 19.44 (d) 1.944
39. 39.8.8 × 0.9 — where does the decimal point go? (a) 7.92 (b) 0.0792 (c) 79.2 (d) 0.792
40. 40.7.4 × 32 — where does the decimal point go? (a) 23.68 (b) 2.368 (c) 2368 (d) 236.8

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