Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 164 · 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. 1.2.7 × 0.4 — where does the decimal point go? (a) 0.108 (b) 0.0108 (c) 10.8 (d) 1.08
2. 2.2.6 × 6 — where does the decimal point go? (a) 15.6 (b) 0.156 (c) 1.56 (d) 156
3. 3.0.63 × 0.9 — where does the decimal point go? (a) 0.0567 (b) 0.00567 (c) 0.567 (d) 5.67
4. 4.8.1 × 3.5 — where does the decimal point go? (a) 2.835 (b) 283.5 (c) 0.2835 (d) 28.35
5. 5.0.91 × 8 — where does the decimal point go? (a) 72.8 (b) 7.28 (c) 0.0728 (d) 0.728
6. 6.0.24 × 0.9 — where does the decimal point go? (a) 0.0216 (b) 0.00216 (c) 2.16 (d) 0.216
7. 7.7.7 × 6 — where does the decimal point go? (a) 4.62 (b) 462 (c) 0.462 (d) 46.2
8. 8.9.4 × 0.8 — where does the decimal point go? (a) 7.52 (b) 0.752 (c) 75.2 (d) 0.0752
9. 9.0.82 × 12 — where does the decimal point go? (a) 0.0984 (b) 9.84 (c) 0.984 (d) 98.4
10. 10.0.46 × 8 — where does the decimal point go? (a) 0.368 (b) 3.68 (c) 36.8 (d) 0.0368
11. 11.0.42 × 13 — where does the decimal point go? (a) 0.0546 (b) 0.546 (c) 54.6 (d) 5.46
12. 12.7.9 × 4.1 — where does the decimal point go? (a) 323.9 (b) 32.39 (c) 3.239 (d) 0.3239
13. 13.3.5 × 19 — where does the decimal point go? (a) 6.65 (b) 665 (c) 66.5 (d) 0.665
14. 14.8.1 × 34 — where does the decimal point go? (a) 2.754 (b) 2754 (c) 275.4 (d) 27.54
15. 15.1.3 × 0.9 — where does the decimal point go? (a) 0.117 (b) 0.0117 (c) 11.7 (d) 1.17
16. 16.0.93 × 0.4 — where does the decimal point go? (a) 3.72 (b) 0.00372 (c) 0.0372 (d) 0.372
17. 17.0.83 × 0.3 — where does the decimal point go? (a) 0.249 (b) 0.0249 (c) 2.49 (d) 0.00249
18. 18.2.6 × 11 — where does the decimal point go? (a) 2.86 (b) 28.6 (c) 0.286 (d) 286
19. 19.0.34 × 0.4 — where does the decimal point go? (a) 0.136 (b) 1.36 (c) 0.00136 (d) 0.0136
20. 20.7.6 × 41 — where does the decimal point go? (a) 3.116 (b) 311.6 (c) 31.16 (d) 3116
21. 21.5.9 × 5 — where does the decimal point go? (a) 0.295 (b) 29.5 (c) 295 (d) 2.95
22. 22.0.43 × 0.7 — where does the decimal point go? (a) 3.01 (b) 0.301 (c) 0.00301 (d) 0.0301
23. 23.7.4 × 3 — where does the decimal point go? (a) 2.22 (b) 222 (c) 0.222 (d) 22.2
24. 24.7.2 × 4.9 — where does the decimal point go? (a) 3.528 (b) 0.3528 (c) 35.28 (d) 352.8
25. 25.5.4 × 0.4 — where does the decimal point go? (a) 2.16 (b) 0.216 (c) 21.6 (d) 0.0216
26. 26.1.7 × 1.8 — where does the decimal point go? (a) 0.0306 (b) 0.306 (c) 30.6 (d) 3.06
27. 27.0.79 × 0.4 — where does the decimal point go? (a) 3.16 (b) 0.316 (c) 0.0316 (d) 0.00316
28. 28.0.87 × 0.7 — where does the decimal point go? (a) 0.0609 (b) 0.00609 (c) 6.09 (d) 0.609
29. 29.0.71 × 1.9 — where does the decimal point go? (a) 13.49 (b) 0.1349 (c) 0.01349 (d) 1.349
30. 30.6.1 × 2 — where does the decimal point go? (a) 122 (b) 1.22 (c) 0.122 (d) 12.2
31. 31.0.18 × 0.2 — where does the decimal point go? (a) 0.0036 (b) 0.036 (c) 0.36 (d) 0.00036
32. 32.4.4 × 9 — where does the decimal point go? (a) 0.396 (b) 39.6 (c) 3.96 (d) 396
33. 33.9.4 × 0.4 — where does the decimal point go? (a) 0.376 (b) 3.76 (c) 0.0376 (d) 37.6
34. 34.7.2 × 41 — where does the decimal point go? (a) 2.952 (b) 29.52 (c) 2952 (d) 295.2
35. 35.0.19 × 0.3 — where does the decimal point go? (a) 0.057 (b) 0.00057 (c) 0.57 (d) 0.0057
36. 36.0.26 × 46 — where does the decimal point go? (a) 11.96 (b) 119.6 (c) 1.196 (d) 0.1196
37. 37.3.7 × 0.9 — where does the decimal point go? (a) 0.0333 (b) 3.33 (c) 0.333 (d) 33.3
38. 38.3.4 × 3.9 — where does the decimal point go? (a) 0.1326 (b) 1.326 (c) 13.26 (d) 132.6
39. 39.0.41 × 23 — where does the decimal point go? (a) 94.3 (b) 9.43 (c) 0.0943 (d) 0.943
40. 40.6.1 × 9 — where does the decimal point go? (a) 549 (b) 0.549 (c) 54.9 (d) 5.49

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