Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 739 · 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. 1.2.8 × 0.9 — where does the decimal point go? (a) 2.52 (b) 0.252 (c) 0.0252 (d) 25.2
2. 2.2.5 × 7 — where does the decimal point go? (a) 0.175 (b) 17.5 (c) 175 (d) 1.75
3. 3.2.1 × 16 — where does the decimal point go? (a) 33.6 (b) 3.36 (c) 0.336 (d) 336
4. 4.0.78 × 26 — where does the decimal point go? (a) 0.2028 (b) 2.028 (c) 20.28 (d) 202.8
5. 5.0.17 × 3 — where does the decimal point go? (a) 0.0051 (b) 0.51 (c) 0.051 (d) 5.1
6. 6.2.1 × 6 — where does the decimal point go? (a) 12.6 (b) 1.26 (c) 126 (d) 0.126
7. 7.0.69 × 4 — where does the decimal point go? (a) 0.0276 (b) 0.276 (c) 2.76 (d) 27.6
8. 8.0.84 × 2.2 — where does the decimal point go? (a) 18.48 (b) 0.01848 (c) 0.1848 (d) 1.848
9. 9.8.2 × 0.6 — where does the decimal point go? (a) 0.492 (b) 4.92 (c) 0.0492 (d) 49.2
10. 10.0.43 × 8 — where does the decimal point go? (a) 34.4 (b) 0.344 (c) 0.0344 (d) 3.44
11. 11.0.85 × 9 — where does the decimal point go? (a) 0.765 (b) 7.65 (c) 0.0765 (d) 76.5
12. 12.2.4 × 48 — where does the decimal point go? (a) 11.52 (b) 1152 (c) 1.152 (d) 115.2
13. 13.1.7 × 2 — where does the decimal point go? (a) 0.34 (b) 3.4 (c) 34 (d) 0.034
14. 14.6.6 × 0.4 — where does the decimal point go? (a) 2.64 (b) 26.4 (c) 0.0264 (d) 0.264
15. 15.0.95 × 3 — where does the decimal point go? (a) 28.5 (b) 0.285 (c) 2.85 (d) 0.0285
16. 16.0.33 × 0.6 — where does the decimal point go? (a) 0.00198 (b) 0.0198 (c) 0.198 (d) 1.98
17. 17.0.92 × 0.6 — where does the decimal point go? (a) 0.552 (b) 0.0552 (c) 5.52 (d) 0.00552
18. 18.9.9 × 1.6 — where does the decimal point go? (a) 15.84 (b) 158.4 (c) 1.584 (d) 0.1584
19. 19.2.8 × 0.8 — where does the decimal point go? (a) 22.4 (b) 0.224 (c) 0.0224 (d) 2.24
20. 20.6.9 × 1.6 — where does the decimal point go? (a) 0.1104 (b) 1.104 (c) 110.4 (d) 11.04
21. 21.9.2 × 0.7 — where does the decimal point go? (a) 0.644 (b) 0.0644 (c) 6.44 (d) 64.4
22. 22.4.3 × 8 — where does the decimal point go? (a) 344 (b) 0.344 (c) 3.44 (d) 34.4
23. 23.6.4 × 7 — where does the decimal point go? (a) 4.48 (b) 44.8 (c) 0.448 (d) 448
24. 24.5.3 × 9 — where does the decimal point go? (a) 47.7 (b) 4.77 (c) 477 (d) 0.477
25. 25.0.88 × 1.9 — where does the decimal point go? (a) 1.672 (b) 0.01672 (c) 16.72 (d) 0.1672
26. 26.0.14 × 7 — where does the decimal point go? (a) 9.8 (b) 0.0098 (c) 0.98 (d) 0.098
27. 27.8.1 × 22 — where does the decimal point go? (a) 1.782 (b) 178.2 (c) 17.82 (d) 1782
28. 28.7.1 × 0.4 — where does the decimal point go? (a) 0.0284 (b) 0.284 (c) 2.84 (d) 28.4
29. 29.0.81 × 3.3 — where does the decimal point go? (a) 26.73 (b) 0.2673 (c) 2.673 (d) 0.02673
30. 30.0.96 × 33 — where does the decimal point go? (a) 0.3168 (b) 31.68 (c) 3.168 (d) 316.8
31. 31.7.5 × 2.7 — where does the decimal point go? (a) 202.5 (b) 2.025 (c) 0.2025 (d) 20.25
32. 32.7.9 × 2 — where does the decimal point go? (a) 15.8 (b) 158 (c) 0.158 (d) 1.58
33. 33.0.82 × 4 — where does the decimal point go? (a) 3.28 (b) 0.328 (c) 0.0328 (d) 32.8
34. 34.0.85 × 1.7 — where does the decimal point go? (a) 14.45 (b) 1.445 (c) 0.1445 (d) 0.01445
35. 35.2.9 × 0.3 — where does the decimal point go? (a) 8.7 (b) 0.087 (c) 0.0087 (d) 0.87
36. 36.0.84 × 1.1 — where does the decimal point go? (a) 0.00924 (b) 0.924 (c) 0.0924 (d) 9.24
37. 37.0.46 × 14 — where does the decimal point go? (a) 64.4 (b) 6.44 (c) 0.644 (d) 0.0644
38. 38.0.12 × 3 — where does the decimal point go? (a) 0.0036 (b) 0.036 (c) 3.6 (d) 0.36
39. 39.2.7 × 48 — where does the decimal point go? (a) 129.6 (b) 1.296 (c) 1296 (d) 12.96
40. 40.4.6 × 4 — where does the decimal point go? (a) 0.184 (b) 1.84 (c) 184 (d) 18.4

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