Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 418 · 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. 1.5.9 × 0.4 — where does the decimal point go? (a) 2.36 (b) 23.6 (c) 0.236 (d) 0.0236
2. 2.0.24 × 0.4 — where does the decimal point go? (a) 0.00096 (b) 0.0096 (c) 0.096 (d) 0.96
3. 3.0.48 × 28 — where does the decimal point go? (a) 1.344 (b) 134.4 (c) 0.1344 (d) 13.44
4. 4.8.9 × 1.1 — where does the decimal point go? (a) 9.79 (b) 0.979 (c) 97.9 (d) 0.0979
5. 5.0.17 × 2.9 — where does the decimal point go? (a) 0.00493 (b) 0.0493 (c) 0.493 (d) 4.93
6. 6.6.5 × 5 — where does the decimal point go? (a) 32.5 (b) 0.325 (c) 325 (d) 3.25
7. 7.0.79 × 0.5 — where does the decimal point go? (a) 0.00395 (b) 0.395 (c) 0.0395 (d) 3.95
8. 8.0.36 × 4 — where does the decimal point go? (a) 0.144 (b) 14.4 (c) 1.44 (d) 0.0144
9. 9.0.37 × 42 — where does the decimal point go? (a) 15.54 (b) 1.554 (c) 0.1554 (d) 155.4
10. 10.0.16 × 3 — where does the decimal point go? (a) 0.48 (b) 4.8 (c) 0.048 (d) 0.0048
11. 11.4.5 × 0.3 — where does the decimal point go? (a) 1.35 (b) 0.0135 (c) 0.135 (d) 13.5
12. 12.0.44 × 19 — where does the decimal point go? (a) 0.0836 (b) 83.6 (c) 8.36 (d) 0.836
13. 13.0.56 × 2 — where does the decimal point go? (a) 11.2 (b) 1.12 (c) 0.0112 (d) 0.112
14. 14.1.9 × 26 — where does the decimal point go? (a) 4.94 (b) 0.494 (c) 49.4 (d) 494
15. 15.1.9 × 8 — where does the decimal point go? (a) 15.2 (b) 0.152 (c) 1.52 (d) 152
16. 16.2.9 × 27 — where does the decimal point go? (a) 0.783 (b) 7.83 (c) 783 (d) 78.3
17. 17.6.7 × 0.4 — where does the decimal point go? (a) 0.0268 (b) 26.8 (c) 0.268 (d) 2.68
18. 18.2.9 × 0.4 — where does the decimal point go? (a) 0.0116 (b) 0.116 (c) 11.6 (d) 1.16
19. 19.9.2 × 0.9 — where does the decimal point go? (a) 82.8 (b) 8.28 (c) 0.0828 (d) 0.828
20. 20.0.72 × 21 — where does the decimal point go? (a) 15.12 (b) 1.512 (c) 0.1512 (d) 151.2
21. 21.9.1 × 47 — where does the decimal point go? (a) 4277 (b) 42.77 (c) 4.277 (d) 427.7
22. 22.0.27 × 5 — where does the decimal point go? (a) 0.135 (b) 0.0135 (c) 1.35 (d) 13.5
23. 23.3.3 × 0.7 — where does the decimal point go? (a) 2.31 (b) 0.231 (c) 0.0231 (d) 23.1
24. 24.3.6 × 49 — where does the decimal point go? (a) 176.4 (b) 1764 (c) 17.64 (d) 1.764
25. 25.0.62 × 0.9 — where does the decimal point go? (a) 0.558 (b) 0.00558 (c) 0.0558 (d) 5.58
26. 26.0.88 × 13 — where does the decimal point go? (a) 11.44 (b) 0.1144 (c) 1.144 (d) 114.4
27. 27.3.8 × 3.2 — where does the decimal point go? (a) 0.1216 (b) 1.216 (c) 121.6 (d) 12.16
28. 28.5.8 × 9 — where does the decimal point go? (a) 0.522 (b) 5.22 (c) 522 (d) 52.2
29. 29.0.56 × 8 — where does the decimal point go? (a) 0.0448 (b) 0.448 (c) 4.48 (d) 44.8
30. 30.9.1 × 19 — where does the decimal point go? (a) 17.29 (b) 1.729 (c) 1729 (d) 172.9
31. 31.6.7 × 2 — where does the decimal point go? (a) 134 (b) 0.134 (c) 13.4 (d) 1.34
32. 32.1.6 × 0.3 — where does the decimal point go? (a) 4.8 (b) 0.0048 (c) 0.48 (d) 0.048
33. 33.9.9 × 3.9 — where does the decimal point go? (a) 38.61 (b) 386.1 (c) 3.861 (d) 0.3861
34. 34.1.9 × 45 — where does the decimal point go? (a) 855 (b) 85.5 (c) 0.855 (d) 8.55
35. 35.5.2 × 0.6 — where does the decimal point go? (a) 31.2 (b) 0.0312 (c) 3.12 (d) 0.312
36. 36.5.2 × 8 — where does the decimal point go? (a) 416 (b) 4.16 (c) 41.6 (d) 0.416
37. 37.0.93 × 2 — where does the decimal point go? (a) 1.86 (b) 0.0186 (c) 0.186 (d) 18.6
38. 38.2.4 × 3 — where does the decimal point go? (a) 0.72 (b) 0.072 (c) 72 (d) 7.2
39. 39.0.53 × 2 — where does the decimal point go? (a) 0.0106 (b) 0.106 (c) 1.06 (d) 10.6
40. 40.8.3 × 0.6 — where does the decimal point go? (a) 0.0498 (b) 0.498 (c) 49.8 (d) 4.98

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