Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 986 · 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. 1.0.52 × 6 — where does the decimal point go? (a) 0.0312 (b) 3.12 (c) 0.312 (d) 31.2
2. 2.0.73 × 7 — where does the decimal point go? (a) 5.11 (b) 0.0511 (c) 0.511 (d) 51.1
3. 3.2.7 × 49 — where does the decimal point go? (a) 1323 (b) 132.3 (c) 1.323 (d) 13.23
4. 4.0.46 × 29 — where does the decimal point go? (a) 13.34 (b) 1.334 (c) 133.4 (d) 0.1334
5. 5.9.8 × 2.9 — where does the decimal point go? (a) 2.842 (b) 28.42 (c) 0.2842 (d) 284.2
6. 6.0.17 × 4.6 — where does the decimal point go? (a) 0.0782 (b) 0.00782 (c) 7.82 (d) 0.782
7. 7.0.74 × 4.6 — where does the decimal point go? (a) 0.3404 (b) 0.03404 (c) 3.404 (d) 34.04
8. 8.5.9 × 0.3 — where does the decimal point go? (a) 1.77 (b) 0.177 (c) 17.7 (d) 0.0177
9. 9.0.49 × 9 — where does the decimal point go? (a) 0.441 (b) 4.41 (c) 44.1 (d) 0.0441
10. 10.0.87 × 2 — where does the decimal point go? (a) 0.174 (b) 1.74 (c) 17.4 (d) 0.0174
11. 11.2.9 × 4.5 — where does the decimal point go? (a) 13.05 (b) 0.1305 (c) 1.305 (d) 130.5
12. 12.4.3 × 1.7 — where does the decimal point go? (a) 0.731 (b) 73.1 (c) 0.0731 (d) 7.31
13. 13.0.18 × 0.4 — where does the decimal point go? (a) 0.72 (b) 0.072 (c) 0.0072 (d) 0.00072
14. 14.0.89 × 26 — where does the decimal point go? (a) 0.2314 (b) 2.314 (c) 23.14 (d) 231.4
15. 15.4.5 × 21 — where does the decimal point go? (a) 9.45 (b) 94.5 (c) 0.945 (d) 945
16. 16.4.8 × 3.2 — where does the decimal point go? (a) 153.6 (b) 0.1536 (c) 1.536 (d) 15.36
17. 17.0.46 × 0.9 — where does the decimal point go? (a) 0.0414 (b) 0.414 (c) 0.00414 (d) 4.14
18. 18.8.2 × 1.6 — where does the decimal point go? (a) 0.1312 (b) 13.12 (c) 131.2 (d) 1.312
19. 19.4.1 × 2 — where does the decimal point go? (a) 0.082 (b) 82 (c) 8.2 (d) 0.82
20. 20.8.3 × 38 — where does the decimal point go? (a) 3154 (b) 315.4 (c) 3.154 (d) 31.54
21. 21.0.18 × 3.4 — where does the decimal point go? (a) 6.12 (b) 0.0612 (c) 0.00612 (d) 0.612
22. 22.1.2 × 8 — where does the decimal point go? (a) 0.96 (b) 0.096 (c) 9.6 (d) 96
23. 23.0.44 × 0.3 — where does the decimal point go? (a) 1.32 (b) 0.132 (c) 0.00132 (d) 0.0132
24. 24.8.1 × 0.4 — where does the decimal point go? (a) 3.24 (b) 32.4 (c) 0.324 (d) 0.0324
25. 25.8.4 × 4.9 — where does the decimal point go? (a) 4.116 (b) 0.4116 (c) 41.16 (d) 411.6
26. 26.0.14 × 3.6 — where does the decimal point go? (a) 5.04 (b) 0.0504 (c) 0.504 (d) 0.00504
27. 27.0.45 × 15 — where does the decimal point go? (a) 6.75 (b) 0.0675 (c) 67.5 (d) 0.675
28. 28.0.55 × 1.5 — where does the decimal point go? (a) 0.825 (b) 8.25 (c) 0.0825 (d) 0.00825
29. 29.0.96 × 0.6 — where does the decimal point go? (a) 0.0576 (b) 0.00576 (c) 5.76 (d) 0.576
30. 30.6.1 × 8 — where does the decimal point go? (a) 0.488 (b) 48.8 (c) 4.88 (d) 488
31. 31.0.66 × 4 — where does the decimal point go? (a) 0.0264 (b) 2.64 (c) 26.4 (d) 0.264
32. 32.0.69 × 9 — where does the decimal point go? (a) 0.0621 (b) 0.621 (c) 62.1 (d) 6.21
33. 33.0.37 × 2.2 — where does the decimal point go? (a) 0.00814 (b) 8.14 (c) 0.814 (d) 0.0814
34. 34.7.9 × 4 — where does the decimal point go? (a) 3.16 (b) 31.6 (c) 316 (d) 0.316
35. 35.0.88 × 3 — where does the decimal point go? (a) 2.64 (b) 0.264 (c) 26.4 (d) 0.0264
36. 36.3.2 × 34 — where does the decimal point go? (a) 1.088 (b) 108.8 (c) 10.88 (d) 1088
37. 37.0.12 × 19 — where does the decimal point go? (a) 22.8 (b) 0.228 (c) 2.28 (d) 0.0228
38. 38.0.66 × 3 — where does the decimal point go? (a) 0.0198 (b) 0.198 (c) 1.98 (d) 19.8
39. 39.6.8 × 4 — where does the decimal point go? (a) 272 (b) 2.72 (c) 27.2 (d) 0.272
40. 40.0.45 × 37 — where does the decimal point go? (a) 16.65 (b) 0.1665 (c) 166.5 (d) 1.665

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