Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 448 · 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. 1.0.64 × 0.8 — where does the decimal point go? (a) 5.12 (b) 0.512 (c) 0.0512 (d) 0.00512
2. 2.0.79 × 28 — where does the decimal point go? (a) 221.2 (b) 22.12 (c) 2.212 (d) 0.2212
3. 3.0.32 × 26 — where does the decimal point go? (a) 0.0832 (b) 0.832 (c) 83.2 (d) 8.32
4. 4.6.5 × 0.5 — where does the decimal point go? (a) 0.325 (b) 3.25 (c) 0.0325 (d) 32.5
5. 5.0.65 × 4.5 — where does the decimal point go? (a) 0.02925 (b) 29.25 (c) 0.2925 (d) 2.925
6. 6.0.95 × 0.3 — where does the decimal point go? (a) 0.285 (b) 2.85 (c) 0.00285 (d) 0.0285
7. 7.0.88 × 9 — where does the decimal point go? (a) 0.0792 (b) 0.792 (c) 79.2 (d) 7.92
8. 8.5.9 × 6 — where does the decimal point go? (a) 35.4 (b) 354 (c) 0.354 (d) 3.54
9. 9.1.2 × 2.4 — where does the decimal point go? (a) 0.0288 (b) 2.88 (c) 28.8 (d) 0.288
10. 10.0.42 × 1.7 — where does the decimal point go? (a) 0.00714 (b) 7.14 (c) 0.714 (d) 0.0714
11. 11.0.21 × 0.7 — where does the decimal point go? (a) 0.00147 (b) 0.0147 (c) 0.147 (d) 1.47
12. 12.8.6 × 0.4 — where does the decimal point go? (a) 0.0344 (b) 3.44 (c) 0.344 (d) 34.4
13. 13.2.3 × 0.9 — where does the decimal point go? (a) 2.07 (b) 0.0207 (c) 0.207 (d) 20.7
14. 14.0.34 × 33 — where does the decimal point go? (a) 112.2 (b) 11.22 (c) 0.1122 (d) 1.122
15. 15.4.1 × 3.9 — where does the decimal point go? (a) 15.99 (b) 1.599 (c) 0.1599 (d) 159.9
16. 16.3.7 × 2.8 — where does the decimal point go? (a) 0.1036 (b) 1.036 (c) 10.36 (d) 103.6
17. 17.0.14 × 9 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 12.6 (d) 0.126
18. 18.0.65 × 3.9 — where does the decimal point go? (a) 0.2535 (b) 2.535 (c) 0.02535 (d) 25.35
19. 19.3.5 × 7 — where does the decimal point go? (a) 24.5 (b) 2.45 (c) 0.245 (d) 245
20. 20.0.85 × 19 — where does the decimal point go? (a) 161.5 (b) 0.1615 (c) 16.15 (d) 1.615
21. 21.6.9 × 45 — where does the decimal point go? (a) 310.5 (b) 3.105 (c) 3105 (d) 31.05
22. 22.2.5 × 35 — where does the decimal point go? (a) 8.75 (b) 0.875 (c) 875 (d) 87.5
23. 23.0.48 × 0.4 — where does the decimal point go? (a) 0.0192 (b) 0.192 (c) 0.00192 (d) 1.92
24. 24.4.3 × 0.7 — where does the decimal point go? (a) 0.0301 (b) 0.301 (c) 30.1 (d) 3.01
25. 25.7.4 × 32 — where does the decimal point go? (a) 236.8 (b) 2368 (c) 2.368 (d) 23.68
26. 26.5.3 × 22 — where does the decimal point go? (a) 1.166 (b) 1166 (c) 11.66 (d) 116.6
27. 27.0.12 × 0.8 — where does the decimal point go? (a) 0.0096 (b) 0.00096 (c) 0.96 (d) 0.096
28. 28.0.85 × 9 — where does the decimal point go? (a) 0.765 (b) 0.0765 (c) 76.5 (d) 7.65
29. 29.8.8 × 6 — where does the decimal point go? (a) 52.8 (b) 5.28 (c) 0.528 (d) 528
30. 30.0.23 × 5 — where does the decimal point go? (a) 11.5 (b) 1.15 (c) 0.115 (d) 0.0115
31. 31.0.78 × 37 — where does the decimal point go? (a) 0.2886 (b) 288.6 (c) 28.86 (d) 2.886
32. 32.7.4 × 0.6 — where does the decimal point go? (a) 44.4 (b) 4.44 (c) 0.0444 (d) 0.444
33. 33.9.5 × 4.7 — where does the decimal point go? (a) 0.4465 (b) 446.5 (c) 4.465 (d) 44.65
34. 34.3.1 × 0.2 — where does the decimal point go? (a) 0.0062 (b) 6.2 (c) 0.062 (d) 0.62
35. 35.2.4 × 7 — where does the decimal point go? (a) 0.168 (b) 168 (c) 16.8 (d) 1.68
36. 36.3.3 × 0.8 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 0.0264 (d) 26.4
37. 37.0.59 × 0.9 — where does the decimal point go? (a) 0.0531 (b) 0.00531 (c) 5.31 (d) 0.531
38. 38.8.2 × 4 — where does the decimal point go? (a) 3.28 (b) 328 (c) 32.8 (d) 0.328
39. 39.2.4 × 0.9 — where does the decimal point go? (a) 21.6 (b) 2.16 (c) 0.216 (d) 0.0216
40. 40.3.6 × 7 — where does the decimal point go? (a) 25.2 (b) 0.252 (c) 2.52 (d) 252

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