Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 383 · 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. 1.3.5 × 0.3 — where does the decimal point go? (a) 10.5 (b) 1.05 (c) 0.105 (d) 0.0105
2. 2.1.3 × 46 — where does the decimal point go? (a) 5.98 (b) 0.598 (c) 598 (d) 59.8
3. 3.3.5 × 4.1 — where does the decimal point go? (a) 1.435 (b) 14.35 (c) 0.1435 (d) 143.5
4. 4.6.4 × 9 — where does the decimal point go? (a) 576 (b) 0.576 (c) 57.6 (d) 5.76
5. 5.5.9 × 33 — where does the decimal point go? (a) 1.947 (b) 19.47 (c) 194.7 (d) 1947
6. 6.0.16 × 4.4 — where does the decimal point go? (a) 0.704 (b) 0.00704 (c) 0.0704 (d) 7.04
7. 7.2.2 × 1.2 — where does the decimal point go? (a) 26.4 (b) 0.264 (c) 0.0264 (d) 2.64
8. 8.0.93 × 46 — where does the decimal point go? (a) 427.8 (b) 4.278 (c) 42.78 (d) 0.4278
9. 9.0.71 × 0.8 — where does the decimal point go? (a) 5.68 (b) 0.00568 (c) 0.0568 (d) 0.568
10. 10.0.17 × 17 — where does the decimal point go? (a) 2.89 (b) 0.289 (c) 28.9 (d) 0.0289
11. 11.0.96 × 9 — where does the decimal point go? (a) 0.864 (b) 8.64 (c) 0.0864 (d) 86.4
12. 12.0.31 × 0.7 — where does the decimal point go? (a) 2.17 (b) 0.0217 (c) 0.00217 (d) 0.217
13. 13.0.57 × 0.2 — where does the decimal point go? (a) 0.0114 (b) 0.00114 (c) 0.114 (d) 1.14
14. 14.2.1 × 0.6 — where does the decimal point go? (a) 0.0126 (b) 0.126 (c) 1.26 (d) 12.6
15. 15.0.87 × 4 — where does the decimal point go? (a) 0.0348 (b) 34.8 (c) 3.48 (d) 0.348
16. 16.9.9 × 41 — where does the decimal point go? (a) 4.059 (b) 40.59 (c) 405.9 (d) 4059
17. 17.0.22 × 0.7 — where does the decimal point go? (a) 0.0154 (b) 1.54 (c) 0.154 (d) 0.00154
18. 18.0.97 × 31 — where does the decimal point go? (a) 300.7 (b) 0.3007 (c) 3.007 (d) 30.07
19. 19.6.5 × 43 — where does the decimal point go? (a) 2.795 (b) 2795 (c) 279.5 (d) 27.95
20. 20.1.2 × 2 — where does the decimal point go? (a) 2.4 (b) 0.024 (c) 24 (d) 0.24
21. 21.8.9 × 3 — where does the decimal point go? (a) 0.267 (b) 267 (c) 26.7 (d) 2.67
22. 22.8.4 × 2.8 — where does the decimal point go? (a) 0.2352 (b) 235.2 (c) 2.352 (d) 23.52
23. 23.0.39 × 1.6 — where does the decimal point go? (a) 0.00624 (b) 0.0624 (c) 0.624 (d) 6.24
24. 24.0.51 × 0.7 — where does the decimal point go? (a) 0.357 (b) 3.57 (c) 0.0357 (d) 0.00357
25. 25.0.93 × 2 — where does the decimal point go? (a) 0.0186 (b) 0.186 (c) 1.86 (d) 18.6
26. 26.4.6 × 1.8 — where does the decimal point go? (a) 82.8 (b) 8.28 (c) 0.0828 (d) 0.828
27. 27.0.23 × 0.6 — where does the decimal point go? (a) 0.00138 (b) 0.138 (c) 1.38 (d) 0.0138
28. 28.0.12 × 0.6 — where does the decimal point go? (a) 0.0072 (b) 0.072 (c) 0.00072 (d) 0.72
29. 29.0.18 × 0.2 — where does the decimal point go? (a) 0.00036 (b) 0.36 (c) 0.036 (d) 0.0036
30. 30.0.58 × 0.9 — where does the decimal point go? (a) 0.0522 (b) 0.522 (c) 5.22 (d) 0.00522
31. 31.0.21 × 4 — where does the decimal point go? (a) 0.084 (b) 0.84 (c) 8.4 (d) 0.0084
32. 32.0.88 × 0.2 — where does the decimal point go? (a) 0.00176 (b) 1.76 (c) 0.176 (d) 0.0176
33. 33.8.3 × 19 — where does the decimal point go? (a) 15.77 (b) 1577 (c) 157.7 (d) 1.577
34. 34.9.3 × 0.3 — where does the decimal point go? (a) 0.0279 (b) 0.279 (c) 2.79 (d) 27.9
35. 35.0.89 × 1.9 — where does the decimal point go? (a) 0.1691 (b) 16.91 (c) 0.01691 (d) 1.691
36. 36.0.13 × 4 — where does the decimal point go? (a) 0.0052 (b) 0.052 (c) 0.52 (d) 5.2
37. 37.0.71 × 36 — where does the decimal point go? (a) 0.2556 (b) 255.6 (c) 2.556 (d) 25.56
38. 38.2.1 × 0.4 — where does the decimal point go? (a) 0.084 (b) 0.0084 (c) 8.4 (d) 0.84
39. 39.0.35 × 1.7 — where does the decimal point go? (a) 5.95 (b) 0.00595 (c) 0.595 (d) 0.0595
40. 40.0.51 × 42 — where does the decimal point go? (a) 0.2142 (b) 21.42 (c) 2.142 (d) 214.2

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