Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 417 · 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. 1.3.4 × 4.1 — where does the decimal point go? (a) 1.394 (b) 13.94 (c) 0.1394 (d) 139.4
2. 2.0.38 × 0.8 — where does the decimal point go? (a) 0.304 (b) 0.0304 (c) 3.04 (d) 0.00304
3. 3.9.6 × 0.2 — where does the decimal point go? (a) 0.0192 (b) 1.92 (c) 19.2 (d) 0.192
4. 4.0.48 × 0.3 — where does the decimal point go? (a) 0.144 (b) 0.0144 (c) 0.00144 (d) 1.44
5. 5.0.73 × 49 — where does the decimal point go? (a) 0.3577 (b) 3.577 (c) 35.77 (d) 357.7
6. 6.3.7 × 36 — where does the decimal point go? (a) 133.2 (b) 13.32 (c) 1.332 (d) 1332
7. 7.0.16 × 3 — where does the decimal point go? (a) 0.048 (b) 0.0048 (c) 4.8 (d) 0.48
8. 8.0.46 × 0.6 — where does the decimal point go? (a) 0.0276 (b) 0.276 (c) 0.00276 (d) 2.76
9. 9.8.3 × 0.6 — where does the decimal point go? (a) 4.98 (b) 0.0498 (c) 49.8 (d) 0.498
10. 10.0.53 × 0.7 — where does the decimal point go? (a) 0.371 (b) 3.71 (c) 0.0371 (d) 0.00371
11. 11.3.7 × 6 — where does the decimal point go? (a) 2.22 (b) 0.222 (c) 222 (d) 22.2
12. 12.0.14 × 6 — where does the decimal point go? (a) 0.84 (b) 8.4 (c) 0.0084 (d) 0.084
13. 13.7.8 × 38 — where does the decimal point go? (a) 296.4 (b) 29.64 (c) 2964 (d) 2.964
14. 14.8.7 × 8 — where does the decimal point go? (a) 69.6 (b) 0.696 (c) 6.96 (d) 696
15. 15.4.8 × 9 — where does the decimal point go? (a) 0.432 (b) 4.32 (c) 432 (d) 43.2
16. 16.0.86 × 9 — where does the decimal point go? (a) 0.774 (b) 77.4 (c) 0.0774 (d) 7.74
17. 17.8.1 × 6 — where does the decimal point go? (a) 4.86 (b) 48.6 (c) 486 (d) 0.486
18. 18.0.37 × 28 — where does the decimal point go? (a) 0.1036 (b) 103.6 (c) 10.36 (d) 1.036
19. 19.2.3 × 8 — where does the decimal point go? (a) 18.4 (b) 184 (c) 0.184 (d) 1.84
20. 20.0.89 × 3.8 — where does the decimal point go? (a) 0.3382 (b) 0.03382 (c) 33.82 (d) 3.382
21. 21.9.3 × 25 — where does the decimal point go? (a) 23.25 (b) 232.5 (c) 2.325 (d) 2325
22. 22.0.93 × 47 — where does the decimal point go? (a) 43.71 (b) 437.1 (c) 4.371 (d) 0.4371
23. 23.6.9 × 0.2 — where does the decimal point go? (a) 13.8 (b) 1.38 (c) 0.138 (d) 0.0138
24. 24.0.27 × 0.3 — where does the decimal point go? (a) 0.0081 (b) 0.00081 (c) 0.81 (d) 0.081
25. 25.1.2 × 0.8 — where does the decimal point go? (a) 0.96 (b) 0.096 (c) 9.6 (d) 0.0096
26. 26.0.87 × 8 — where does the decimal point go? (a) 0.696 (b) 69.6 (c) 6.96 (d) 0.0696
27. 27.8.6 × 24 — where does the decimal point go? (a) 206.4 (b) 2.064 (c) 20.64 (d) 2064
28. 28.0.17 × 8 — where does the decimal point go? (a) 0.0136 (b) 0.136 (c) 13.6 (d) 1.36
29. 29.0.95 × 3 — where does the decimal point go? (a) 28.5 (b) 0.285 (c) 2.85 (d) 0.0285
30. 30.9.7 × 0.7 — where does the decimal point go? (a) 6.79 (b) 0.0679 (c) 0.679 (d) 67.9
31. 31.0.48 × 26 — where does the decimal point go? (a) 0.1248 (b) 12.48 (c) 124.8 (d) 1.248
32. 32.0.96 × 9 — where does the decimal point go? (a) 8.64 (b) 0.864 (c) 0.0864 (d) 86.4
33. 33.0.13 × 3.8 — where does the decimal point go? (a) 0.494 (b) 0.0494 (c) 4.94 (d) 0.00494
34. 34.0.79 × 4 — where does the decimal point go? (a) 3.16 (b) 0.316 (c) 31.6 (d) 0.0316
35. 35.0.23 × 2 — where does the decimal point go? (a) 0.46 (b) 0.046 (c) 4.6 (d) 0.0046
36. 36.0.12 × 9 — where does the decimal point go? (a) 1.08 (b) 0.0108 (c) 10.8 (d) 0.108
37. 37.0.26 × 0.3 — where does the decimal point go? (a) 0.00078 (b) 0.078 (c) 0.78 (d) 0.0078
38. 38.3.4 × 4 — where does the decimal point go? (a) 0.136 (b) 13.6 (c) 136 (d) 1.36
39. 39.2.5 × 0.9 — where does the decimal point go? (a) 2.25 (b) 22.5 (c) 0.0225 (d) 0.225
40. 40.6.9 × 6 — where does the decimal point go? (a) 4.14 (b) 414 (c) 41.4 (d) 0.414

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