Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 102 · 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. 1.0.21 × 2.4 — where does the decimal point go? (a) 0.0504 (b) 5.04 (c) 0.504 (d) 0.00504
2. 2.8.4 × 47 — where does the decimal point go? (a) 394.8 (b) 3.948 (c) 3948 (d) 39.48
3. 3.6.6 × 37 — where does the decimal point go? (a) 2.442 (b) 244.2 (c) 2442 (d) 24.42
4. 4.0.22 × 0.6 — where does the decimal point go? (a) 0.0132 (b) 1.32 (c) 0.00132 (d) 0.132
5. 5.2.9 × 38 — where does the decimal point go? (a) 11.02 (b) 110.2 (c) 1.102 (d) 1102
6. 6.0.71 × 2 — where does the decimal point go? (a) 14.2 (b) 0.0142 (c) 0.142 (d) 1.42
7. 7.4.1 × 49 — where does the decimal point go? (a) 2.009 (b) 200.9 (c) 2009 (d) 20.09
8. 8.5.2 × 0.8 — where does the decimal point go? (a) 0.0416 (b) 4.16 (c) 41.6 (d) 0.416
9. 9.0.47 × 3.8 — where does the decimal point go? (a) 1.786 (b) 0.01786 (c) 0.1786 (d) 17.86
10. 10.1.4 × 7 — where does the decimal point go? (a) 9.8 (b) 0.98 (c) 98 (d) 0.098
11. 11.2.9 × 2.1 — where does the decimal point go? (a) 6.09 (b) 0.609 (c) 60.9 (d) 0.0609
12. 12.9.7 × 0.4 — where does the decimal point go? (a) 0.388 (b) 3.88 (c) 0.0388 (d) 38.8
13. 13.0.47 × 0.7 — where does the decimal point go? (a) 3.29 (b) 0.0329 (c) 0.00329 (d) 0.329
14. 14.0.48 × 0.9 — where does the decimal point go? (a) 0.00432 (b) 0.0432 (c) 4.32 (d) 0.432
15. 15.2.7 × 4.6 — where does the decimal point go? (a) 12.42 (b) 124.2 (c) 1.242 (d) 0.1242
16. 16.0.86 × 37 — where does the decimal point go? (a) 0.3182 (b) 31.82 (c) 318.2 (d) 3.182
17. 17.5.6 × 4.9 — where does the decimal point go? (a) 274.4 (b) 2.744 (c) 0.2744 (d) 27.44
18. 18.0.97 × 38 — where does the decimal point go? (a) 368.6 (b) 36.86 (c) 0.3686 (d) 3.686
19. 19.0.37 × 4.3 — where does the decimal point go? (a) 0.01591 (b) 1.591 (c) 15.91 (d) 0.1591
20. 20.9.7 × 0.2 — where does the decimal point go? (a) 1.94 (b) 0.0194 (c) 19.4 (d) 0.194
21. 21.4.4 × 0.6 — where does the decimal point go? (a) 2.64 (b) 26.4 (c) 0.264 (d) 0.0264
22. 22.9.3 × 2 — where does the decimal point go? (a) 18.6 (b) 186 (c) 0.186 (d) 1.86
23. 23.0.59 × 5 — where does the decimal point go? (a) 0.295 (b) 2.95 (c) 29.5 (d) 0.0295
24. 24.1.6 × 0.2 — where does the decimal point go? (a) 3.2 (b) 0.32 (c) 0.032 (d) 0.0032
25. 25.0.54 × 34 — where does the decimal point go? (a) 18.36 (b) 1.836 (c) 183.6 (d) 0.1836
26. 26.0.73 × 4.6 — where does the decimal point go? (a) 3.358 (b) 0.3358 (c) 33.58 (d) 0.03358
27. 27.0.54 × 0.8 — where does the decimal point go? (a) 0.432 (b) 0.0432 (c) 0.00432 (d) 4.32
28. 28.9.1 × 0.3 — where does the decimal point go? (a) 0.0273 (b) 27.3 (c) 2.73 (d) 0.273
29. 29.8.9 × 36 — where does the decimal point go? (a) 32.04 (b) 3.204 (c) 3204 (d) 320.4
30. 30.4.5 × 3 — where does the decimal point go? (a) 0.135 (b) 1.35 (c) 135 (d) 13.5
31. 31.0.18 × 9 — where does the decimal point go? (a) 16.2 (b) 1.62 (c) 0.162 (d) 0.0162
32. 32.1.7 × 34 — where does the decimal point go? (a) 0.578 (b) 57.8 (c) 5.78 (d) 578
33. 33.0.44 × 19 — where does the decimal point go? (a) 0.0836 (b) 0.836 (c) 83.6 (d) 8.36
34. 34.0.78 × 34 — where does the decimal point go? (a) 2.652 (b) 265.2 (c) 26.52 (d) 0.2652
35. 35.0.44 × 2.3 — where does the decimal point go? (a) 0.01012 (b) 0.1012 (c) 10.12 (d) 1.012
36. 36.8.5 × 4.3 — where does the decimal point go? (a) 36.55 (b) 365.5 (c) 3.655 (d) 0.3655
37. 37.0.67 × 2.2 — where does the decimal point go? (a) 14.74 (b) 0.1474 (c) 0.01474 (d) 1.474
38. 38.1.9 × 0.7 — where does the decimal point go? (a) 13.3 (b) 0.0133 (c) 1.33 (d) 0.133
39. 39.9.3 × 2.6 — where does the decimal point go? (a) 2.418 (b) 24.18 (c) 0.2418 (d) 241.8
40. 40.3.7 × 0.7 — where does the decimal point go? (a) 2.59 (b) 25.9 (c) 0.259 (d) 0.0259

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