Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 653 · 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 × 8 — where does the decimal point go? (a) 2.24 (b) 0.0224 (c) 0.224 (d) 22.4
2. 2.6.1 × 0.6 — where does the decimal point go? (a) 3.66 (b) 36.6 (c) 0.366 (d) 0.0366
3. 3.5.7 × 0.2 — where does the decimal point go? (a) 11.4 (b) 0.114 (c) 1.14 (d) 0.0114
4. 4.0.23 × 3 — where does the decimal point go? (a) 6.9 (b) 0.0069 (c) 0.069 (d) 0.69
5. 5.2.6 × 7 — where does the decimal point go? (a) 1.82 (b) 0.182 (c) 182 (d) 18.2
6. 6.9.3 × 14 — where does the decimal point go? (a) 130.2 (b) 1302 (c) 13.02 (d) 1.302
7. 7.7.9 × 9 — where does the decimal point go? (a) 0.711 (b) 71.1 (c) 711 (d) 7.11
8. 8.0.48 × 9 — where does the decimal point go? (a) 4.32 (b) 0.0432 (c) 43.2 (d) 0.432
9. 9.0.52 × 2 — where does the decimal point go? (a) 1.04 (b) 0.104 (c) 0.0104 (d) 10.4
10. 10.7.6 × 2.2 — where does the decimal point go? (a) 1.672 (b) 167.2 (c) 0.1672 (d) 16.72
11. 11.8.3 × 43 — where does the decimal point go? (a) 3.569 (b) 356.9 (c) 35.69 (d) 3569
12. 12.0.37 × 0.5 — where does the decimal point go? (a) 1.85 (b) 0.185 (c) 0.0185 (d) 0.00185
13. 13.0.92 × 2 — where does the decimal point go? (a) 0.0184 (b) 18.4 (c) 1.84 (d) 0.184
14. 14.0.97 × 2 — where does the decimal point go? (a) 19.4 (b) 0.194 (c) 1.94 (d) 0.0194
15. 15.0.97 × 43 — where does the decimal point go? (a) 0.4171 (b) 4.171 (c) 417.1 (d) 41.71
16. 16.1.9 × 4.1 — where does the decimal point go? (a) 7.79 (b) 77.9 (c) 0.779 (d) 0.0779
17. 17.4.9 × 7 — where does the decimal point go? (a) 343 (b) 34.3 (c) 3.43 (d) 0.343
18. 18.5.2 × 8 — where does the decimal point go? (a) 416 (b) 0.416 (c) 4.16 (d) 41.6
19. 19.0.69 × 13 — where does the decimal point go? (a) 0.897 (b) 89.7 (c) 0.0897 (d) 8.97
20. 20.0.63 × 0.3 — where does the decimal point go? (a) 0.189 (b) 1.89 (c) 0.0189 (d) 0.00189
21. 21.0.28 × 0.8 — where does the decimal point go? (a) 0.0224 (b) 0.00224 (c) 0.224 (d) 2.24
22. 22.6.6 × 0.9 — where does the decimal point go? (a) 0.0594 (b) 5.94 (c) 59.4 (d) 0.594
23. 23.4.4 × 2.1 — where does the decimal point go? (a) 9.24 (b) 0.924 (c) 92.4 (d) 0.0924
24. 24.8.3 × 4.1 — where does the decimal point go? (a) 340.3 (b) 0.3403 (c) 34.03 (d) 3.403
25. 25.9.9 × 36 — where does the decimal point go? (a) 35.64 (b) 356.4 (c) 3564 (d) 3.564
26. 26.2.9 × 6 — where does the decimal point go? (a) 174 (b) 1.74 (c) 17.4 (d) 0.174
27. 27.8.3 × 1.7 — where does the decimal point go? (a) 1.411 (b) 141.1 (c) 0.1411 (d) 14.11
28. 28.8.7 × 11 — where does the decimal point go? (a) 0.957 (b) 9.57 (c) 957 (d) 95.7
29. 29.0.83 × 9 — where does the decimal point go? (a) 0.747 (b) 74.7 (c) 7.47 (d) 0.0747
30. 30.0.17 × 15 — where does the decimal point go? (a) 0.255 (b) 25.5 (c) 0.0255 (d) 2.55
31. 31.0.69 × 21 — where does the decimal point go? (a) 14.49 (b) 1.449 (c) 144.9 (d) 0.1449
32. 32.0.69 × 2 — where does the decimal point go? (a) 0.138 (b) 13.8 (c) 1.38 (d) 0.0138
33. 33.0.72 × 4.7 — where does the decimal point go? (a) 0.03384 (b) 0.3384 (c) 3.384 (d) 33.84
34. 34.0.51 × 0.3 — where does the decimal point go? (a) 0.153 (b) 1.53 (c) 0.00153 (d) 0.0153
35. 35.5.8 × 38 — where does the decimal point go? (a) 220.4 (b) 22.04 (c) 2.204 (d) 2204
36. 36.0.83 × 43 — where does the decimal point go? (a) 3.569 (b) 356.9 (c) 35.69 (d) 0.3569
37. 37.0.51 × 2.8 — where does the decimal point go? (a) 0.01428 (b) 1.428 (c) 0.1428 (d) 14.28
38. 38.4.3 × 0.3 — where does the decimal point go? (a) 12.9 (b) 0.0129 (c) 0.129 (d) 1.29
39. 39.5.9 × 1.5 — where does the decimal point go? (a) 8.85 (b) 88.5 (c) 0.885 (d) 0.0885
40. 40.7.2 × 9 — where does the decimal point go? (a) 0.648 (b) 64.8 (c) 6.48 (d) 648

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