Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 910 · 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. 1.0.28 × 47 — where does the decimal point go? (a) 0.1316 (b) 1.316 (c) 131.6 (d) 13.16
2. 2.0.96 × 27 — where does the decimal point go? (a) 2.592 (b) 0.2592 (c) 25.92 (d) 259.2
3. 3.0.38 × 0.3 — where does the decimal point go? (a) 0.00114 (b) 0.0114 (c) 0.114 (d) 1.14
4. 4.0.15 × 39 — where does the decimal point go? (a) 58.5 (b) 5.85 (c) 0.585 (d) 0.0585
5. 5.0.47 × 24 — where does the decimal point go? (a) 112.8 (b) 0.1128 (c) 1.128 (d) 11.28
6. 6.1.3 × 2 — where does the decimal point go? (a) 26 (b) 0.026 (c) 0.26 (d) 2.6
7. 7.3.3 × 4.1 — where does the decimal point go? (a) 13.53 (b) 135.3 (c) 1.353 (d) 0.1353
8. 8.1.3 × 18 — where does the decimal point go? (a) 23.4 (b) 234 (c) 2.34 (d) 0.234
9. 9.0.24 × 7 — where does the decimal point go? (a) 16.8 (b) 0.0168 (c) 0.168 (d) 1.68
10. 10.0.31 × 0.2 — where does the decimal point go? (a) 0.0062 (b) 0.062 (c) 0.00062 (d) 0.62
11. 11.0.52 × 0.8 — where does the decimal point go? (a) 0.0416 (b) 0.416 (c) 0.00416 (d) 4.16
12. 12.2.4 × 0.8 — where does the decimal point go? (a) 19.2 (b) 0.192 (c) 1.92 (d) 0.0192
13. 13.6.6 × 1.9 — where does the decimal point go? (a) 12.54 (b) 1.254 (c) 0.1254 (d) 125.4
14. 14.0.62 × 3 — where does the decimal point go? (a) 1.86 (b) 0.0186 (c) 0.186 (d) 18.6
15. 15.8.8 × 9 — where does the decimal point go? (a) 79.2 (b) 0.792 (c) 7.92 (d) 792
16. 16.0.47 × 23 — where does the decimal point go? (a) 0.1081 (b) 108.1 (c) 1.081 (d) 10.81
17. 17.5.2 × 8 — where does the decimal point go? (a) 416 (b) 41.6 (c) 0.416 (d) 4.16
18. 18.0.37 × 33 — where does the decimal point go? (a) 12.21 (b) 0.1221 (c) 122.1 (d) 1.221
19. 19.0.42 × 0.2 — where does the decimal point go? (a) 0.084 (b) 0.0084 (c) 0.84 (d) 0.00084
20. 20.0.51 × 0.9 — where does the decimal point go? (a) 0.00459 (b) 0.0459 (c) 0.459 (d) 4.59
21. 21.5.8 × 8 — where does the decimal point go? (a) 46.4 (b) 0.464 (c) 4.64 (d) 464
22. 22.8.1 × 8 — where does the decimal point go? (a) 0.648 (b) 64.8 (c) 648 (d) 6.48
23. 23.0.22 × 0.9 — where does the decimal point go? (a) 0.0198 (b) 0.198 (c) 1.98 (d) 0.00198
24. 24.6.1 × 0.6 — where does the decimal point go? (a) 0.0366 (b) 0.366 (c) 3.66 (d) 36.6
25. 25.0.54 × 1.8 — where does the decimal point go? (a) 0.972 (b) 9.72 (c) 0.00972 (d) 0.0972
26. 26.7.9 × 2 — where does the decimal point go? (a) 0.158 (b) 1.58 (c) 158 (d) 15.8
27. 27.2.5 × 25 — where does the decimal point go? (a) 0.625 (b) 6.25 (c) 625 (d) 62.5
28. 28.4.1 × 7 — where does the decimal point go? (a) 0.287 (b) 28.7 (c) 2.87 (d) 287
29. 29.5.2 × 2 — where does the decimal point go? (a) 104 (b) 1.04 (c) 0.104 (d) 10.4
30. 30.5.4 × 1.2 — where does the decimal point go? (a) 0.0648 (b) 0.648 (c) 64.8 (d) 6.48
31. 31.1.7 × 8 — where does the decimal point go? (a) 1.36 (b) 0.136 (c) 136 (d) 13.6
32. 32.0.74 × 4.9 — where does the decimal point go? (a) 3.626 (b) 36.26 (c) 0.3626 (d) 0.03626
33. 33.1.7 × 1.4 — where does the decimal point go? (a) 2.38 (b) 0.0238 (c) 23.8 (d) 0.238
34. 34.3.2 × 2.2 — where does the decimal point go? (a) 7.04 (b) 0.704 (c) 70.4 (d) 0.0704
35. 35.0.52 × 0.2 — where does the decimal point go? (a) 0.0104 (b) 0.00104 (c) 1.04 (d) 0.104
36. 36.6.2 × 0.7 — where does the decimal point go? (a) 0.0434 (b) 4.34 (c) 0.434 (d) 43.4
37. 37.3.1 × 5 — where does the decimal point go? (a) 155 (b) 15.5 (c) 0.155 (d) 1.55
38. 38.7.9 × 14 — where does the decimal point go? (a) 110.6 (b) 1.106 (c) 11.06 (d) 1106
39. 39.2.7 × 0.8 — where does the decimal point go? (a) 0.0216 (b) 0.216 (c) 2.16 (d) 21.6
40. 40.7.2 × 22 — where does the decimal point go? (a) 15.84 (b) 1.584 (c) 158.4 (d) 1584

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