Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 186 · 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. 1.8.3 × 37 — where does the decimal point go? (a) 3.071 (b) 307.1 (c) 30.71 (d) 3071
2. 2.0.17 × 2 — where does the decimal point go? (a) 3.4 (b) 0.34 (c) 0.034 (d) 0.0034
3. 3.0.41 × 28 — where does the decimal point go? (a) 114.8 (b) 11.48 (c) 0.1148 (d) 1.148
4. 4.5.8 × 0.2 — where does the decimal point go? (a) 11.6 (b) 0.0116 (c) 0.116 (d) 1.16
5. 5.4.8 × 9 — where does the decimal point go? (a) 432 (b) 4.32 (c) 43.2 (d) 0.432
6. 6.3.8 × 0.4 — where does the decimal point go? (a) 0.152 (b) 15.2 (c) 1.52 (d) 0.0152
7. 7.2.1 × 44 — where does the decimal point go? (a) 92.4 (b) 9.24 (c) 924 (d) 0.924
8. 8.6.8 × 1.1 — where does the decimal point go? (a) 7.48 (b) 0.0748 (c) 74.8 (d) 0.748
9. 9.3.5 × 5 — where does the decimal point go? (a) 0.175 (b) 17.5 (c) 175 (d) 1.75
10. 10.0.81 × 3.8 — where does the decimal point go? (a) 30.78 (b) 0.03078 (c) 3.078 (d) 0.3078
11. 11.0.92 × 4 — where does the decimal point go? (a) 3.68 (b) 36.8 (c) 0.0368 (d) 0.368
12. 12.5.5 × 7 — where does the decimal point go? (a) 38.5 (b) 385 (c) 3.85 (d) 0.385
13. 13.3.4 × 4.4 — where does the decimal point go? (a) 149.6 (b) 0.1496 (c) 1.496 (d) 14.96
14. 14.0.66 × 6 — where does the decimal point go? (a) 0.396 (b) 0.0396 (c) 39.6 (d) 3.96
15. 15.1.9 × 16 — where does the decimal point go? (a) 0.304 (b) 304 (c) 3.04 (d) 30.4
16. 16.7.7 × 3.4 — where does the decimal point go? (a) 0.2618 (b) 261.8 (c) 2.618 (d) 26.18
17. 17.0.52 × 0.6 — where does the decimal point go? (a) 0.00312 (b) 3.12 (c) 0.312 (d) 0.0312
18. 18.0.17 × 3 — where does the decimal point go? (a) 0.0051 (b) 5.1 (c) 0.51 (d) 0.051
19. 19.0.94 × 2.9 — where does the decimal point go? (a) 27.26 (b) 0.2726 (c) 0.02726 (d) 2.726
20. 20.1.6 × 6 — where does the decimal point go? (a) 0.096 (b) 96 (c) 0.96 (d) 9.6
21. 21.0.99 × 4 — where does the decimal point go? (a) 0.396 (b) 0.0396 (c) 3.96 (d) 39.6
22. 22.0.73 × 8 — where does the decimal point go? (a) 0.584 (b) 0.0584 (c) 5.84 (d) 58.4
23. 23.6.3 × 7 — where does the decimal point go? (a) 44.1 (b) 0.441 (c) 441 (d) 4.41
24. 24.0.83 × 0.2 — where does the decimal point go? (a) 0.166 (b) 0.0166 (c) 0.00166 (d) 1.66
25. 25.5.8 × 9 — where does the decimal point go? (a) 522 (b) 52.2 (c) 0.522 (d) 5.22
26. 26.0.88 × 2 — where does the decimal point go? (a) 17.6 (b) 0.176 (c) 0.0176 (d) 1.76
27. 27.1.3 × 1.5 — where does the decimal point go? (a) 0.0195 (b) 19.5 (c) 0.195 (d) 1.95
28. 28.0.98 × 0.2 — where does the decimal point go? (a) 1.96 (b) 0.0196 (c) 0.00196 (d) 0.196
29. 29.7.2 × 42 — where does the decimal point go? (a) 30.24 (b) 3024 (c) 3.024 (d) 302.4
30. 30.0.21 × 0.3 — where does the decimal point go? (a) 0.063 (b) 0.00063 (c) 0.63 (d) 0.0063
31. 31.0.78 × 2.9 — where does the decimal point go? (a) 2.262 (b) 22.62 (c) 0.02262 (d) 0.2262
32. 32.6.6 × 42 — where does the decimal point go? (a) 2.772 (b) 2772 (c) 27.72 (d) 277.2
33. 33.0.79 × 3.9 — where does the decimal point go? (a) 3.081 (b) 30.81 (c) 0.03081 (d) 0.3081
34. 34.4.3 × 3.9 — where does the decimal point go? (a) 1.677 (b) 0.1677 (c) 167.7 (d) 16.77
35. 35.5.6 × 3.4 — where does the decimal point go? (a) 19.04 (b) 1.904 (c) 0.1904 (d) 190.4
36. 36.0.39 × 4 — where does the decimal point go? (a) 0.156 (b) 1.56 (c) 0.0156 (d) 15.6
37. 37.0.79 × 2.3 — where does the decimal point go? (a) 1.817 (b) 0.01817 (c) 18.17 (d) 0.1817
38. 38.4.7 × 36 — where does the decimal point go? (a) 16.92 (b) 1.692 (c) 1692 (d) 169.2
39. 39.6.7 × 48 — where does the decimal point go? (a) 3.216 (b) 321.6 (c) 32.16 (d) 3216
40. 40.5.9 × 0.3 — where does the decimal point go? (a) 1.77 (b) 0.0177 (c) 17.7 (d) 0.177

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