Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 77 · 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. 1.0.56 × 3 — where does the decimal point go? (a) 1.68 (b) 16.8 (c) 0.0168 (d) 0.168
2. 2.0.64 × 0.7 — where does the decimal point go? (a) 0.448 (b) 4.48 (c) 0.00448 (d) 0.0448
3. 3.0.14 × 0.7 — where does the decimal point go? (a) 0.00098 (b) 0.0098 (c) 0.098 (d) 0.98
4. 4.2.6 × 11 — where does the decimal point go? (a) 286 (b) 2.86 (c) 28.6 (d) 0.286
5. 5.1.2 × 3.9 — where does the decimal point go? (a) 4.68 (b) 0.468 (c) 0.0468 (d) 46.8
6. 6.0.23 × 1.2 — where does the decimal point go? (a) 0.00276 (b) 0.0276 (c) 2.76 (d) 0.276
7. 7.0.63 × 4 — where does the decimal point go? (a) 0.252 (b) 2.52 (c) 0.0252 (d) 25.2
8. 8.0.96 × 39 — where does the decimal point go? (a) 374.4 (b) 3.744 (c) 37.44 (d) 0.3744
9. 9.9.1 × 16 — where does the decimal point go? (a) 14.56 (b) 1456 (c) 1.456 (d) 145.6
10. 10.3.9 × 18 — where does the decimal point go? (a) 70.2 (b) 0.702 (c) 702 (d) 7.02
11. 11.0.97 × 6 — where does the decimal point go? (a) 0.582 (b) 0.0582 (c) 58.2 (d) 5.82
12. 12.0.43 × 28 — where does the decimal point go? (a) 12.04 (b) 1.204 (c) 120.4 (d) 0.1204
13. 13.8.7 × 0.8 — where does the decimal point go? (a) 0.696 (b) 6.96 (c) 69.6 (d) 0.0696
14. 14.0.82 × 0.8 — where does the decimal point go? (a) 0.00656 (b) 0.656 (c) 0.0656 (d) 6.56
15. 15.0.93 × 27 — where does the decimal point go? (a) 25.11 (b) 2.511 (c) 0.2511 (d) 251.1
16. 16.9.1 × 2 — where does the decimal point go? (a) 1.82 (b) 182 (c) 0.182 (d) 18.2
17. 17.0.16 × 31 — where does the decimal point go? (a) 4.96 (b) 0.0496 (c) 49.6 (d) 0.496
18. 18.0.36 × 3 — where does the decimal point go? (a) 1.08 (b) 0.0108 (c) 10.8 (d) 0.108
19. 19.5.3 × 0.3 — where does the decimal point go? (a) 1.59 (b) 0.159 (c) 15.9 (d) 0.0159
20. 20.0.23 × 9 — where does the decimal point go? (a) 20.7 (b) 2.07 (c) 0.207 (d) 0.0207
21. 21.0.34 × 2.3 — where does the decimal point go? (a) 0.0782 (b) 7.82 (c) 0.782 (d) 0.00782
22. 22.0.59 × 5 — where does the decimal point go? (a) 0.0295 (b) 0.295 (c) 29.5 (d) 2.95
23. 23.0.49 × 7 — where does the decimal point go? (a) 0.343 (b) 3.43 (c) 34.3 (d) 0.0343
24. 24.1.6 × 31 — where does the decimal point go? (a) 49.6 (b) 496 (c) 0.496 (d) 4.96
25. 25.0.33 × 0.4 — where does the decimal point go? (a) 1.32 (b) 0.132 (c) 0.0132 (d) 0.00132
26. 26.0.13 × 1.7 — where does the decimal point go? (a) 0.00221 (b) 0.221 (c) 0.0221 (d) 2.21
27. 27.7.4 × 0.2 — where does the decimal point go? (a) 1.48 (b) 0.0148 (c) 14.8 (d) 0.148
28. 28.0.52 × 17 — where does the decimal point go? (a) 8.84 (b) 0.0884 (c) 0.884 (d) 88.4
29. 29.7.3 × 0.9 — where does the decimal point go? (a) 65.7 (b) 0.0657 (c) 6.57 (d) 0.657
30. 30.9.9 × 1.8 — where does the decimal point go? (a) 0.1782 (b) 178.2 (c) 17.82 (d) 1.782
31. 31.4.7 × 44 — where does the decimal point go? (a) 20.68 (b) 2068 (c) 206.8 (d) 2.068
32. 32.0.27 × 9 — where does the decimal point go? (a) 0.243 (b) 2.43 (c) 0.0243 (d) 24.3
33. 33.0.89 × 2.5 — where does the decimal point go? (a) 0.02225 (b) 2.225 (c) 0.2225 (d) 22.25
34. 34.7.2 × 3 — where does the decimal point go? (a) 0.216 (b) 216 (c) 21.6 (d) 2.16
35. 35.7.2 × 0.8 — where does the decimal point go? (a) 0.576 (b) 5.76 (c) 0.0576 (d) 57.6
36. 36.0.57 × 0.5 — where does the decimal point go? (a) 0.285 (b) 0.00285 (c) 0.0285 (d) 2.85
37. 37.8.9 × 4.9 — where does the decimal point go? (a) 4.361 (b) 43.61 (c) 0.4361 (d) 436.1
38. 38.0.41 × 9 — where does the decimal point go? (a) 0.369 (b) 3.69 (c) 0.0369 (d) 36.9
39. 39.3.1 × 9 — where does the decimal point go? (a) 27.9 (b) 0.279 (c) 279 (d) 2.79
40. 40.8.9 × 22 — where does the decimal point go? (a) 1.958 (b) 195.8 (c) 19.58 (d) 1958

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