Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 455 · 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. 1.6.9 × 1.2 — where does the decimal point go? (a) 82.8 (b) 8.28 (c) 0.0828 (d) 0.828
2. 2.0.37 × 3 — where does the decimal point go? (a) 0.0111 (b) 1.11 (c) 0.111 (d) 11.1
3. 3.4.7 × 6 — where does the decimal point go? (a) 282 (b) 2.82 (c) 28.2 (d) 0.282
4. 4.0.31 × 0.9 — where does the decimal point go? (a) 2.79 (b) 0.00279 (c) 0.279 (d) 0.0279
5. 5.5.3 × 2.3 — where does the decimal point go? (a) 12.19 (b) 1.219 (c) 121.9 (d) 0.1219
6. 6.3.6 × 4.7 — where does the decimal point go? (a) 16.92 (b) 1.692 (c) 0.1692 (d) 169.2
7. 7.4.9 × 3 — where does the decimal point go? (a) 1.47 (b) 0.147 (c) 14.7 (d) 147
8. 8.8.9 × 16 — where does the decimal point go? (a) 142.4 (b) 14.24 (c) 1.424 (d) 1424
9. 9.2.5 × 0.5 — where does the decimal point go? (a) 1.25 (b) 12.5 (c) 0.125 (d) 0.0125
10. 10.0.85 × 3.7 — where does the decimal point go? (a) 0.03145 (b) 3.145 (c) 0.3145 (d) 31.45
11. 11.8.4 × 26 — where does the decimal point go? (a) 2184 (b) 21.84 (c) 2.184 (d) 218.4
12. 12.9.5 × 0.3 — where does the decimal point go? (a) 0.0285 (b) 2.85 (c) 28.5 (d) 0.285
13. 13.2.1 × 0.3 — where does the decimal point go? (a) 0.63 (b) 0.063 (c) 0.0063 (d) 6.3
14. 14.3.4 × 6 — where does the decimal point go? (a) 204 (b) 20.4 (c) 2.04 (d) 0.204
15. 15.9.5 × 3.5 — where does the decimal point go? (a) 0.3325 (b) 3.325 (c) 332.5 (d) 33.25
16. 16.2.4 × 44 — where does the decimal point go? (a) 105.6 (b) 10.56 (c) 1056 (d) 1.056
17. 17.7.1 × 28 — where does the decimal point go? (a) 1988 (b) 19.88 (c) 1.988 (d) 198.8
18. 18.0.76 × 37 — where does the decimal point go? (a) 0.2812 (b) 28.12 (c) 281.2 (d) 2.812
19. 19.6.7 × 0.2 — where does the decimal point go? (a) 0.0134 (b) 0.134 (c) 13.4 (d) 1.34
20. 20.8.1 × 3.6 — where does the decimal point go? (a) 2.916 (b) 291.6 (c) 0.2916 (d) 29.16
21. 21.8.2 × 16 — where does the decimal point go? (a) 131.2 (b) 1312 (c) 13.12 (d) 1.312
22. 22.0.12 × 1.4 — where does the decimal point go? (a) 0.168 (b) 0.0168 (c) 0.00168 (d) 1.68
23. 23.9.3 × 0.7 — where does the decimal point go? (a) 0.651 (b) 6.51 (c) 0.0651 (d) 65.1
24. 24.8.5 × 19 — where does the decimal point go? (a) 1.615 (b) 16.15 (c) 161.5 (d) 1615
25. 25.4.1 × 0.7 — where does the decimal point go? (a) 2.87 (b) 0.0287 (c) 28.7 (d) 0.287
26. 26.1.7 × 4.3 — where does the decimal point go? (a) 0.731 (b) 73.1 (c) 0.0731 (d) 7.31
27. 27.0.73 × 44 — where does the decimal point go? (a) 3.212 (b) 321.2 (c) 0.3212 (d) 32.12
28. 28.4.9 × 0.5 — where does the decimal point go? (a) 2.45 (b) 24.5 (c) 0.0245 (d) 0.245
29. 29.3.7 × 4.8 — where does the decimal point go? (a) 0.1776 (b) 1.776 (c) 17.76 (d) 177.6
30. 30.0.32 × 2.9 — where does the decimal point go? (a) 9.28 (b) 0.928 (c) 0.0928 (d) 0.00928
31. 31.2.3 × 2.8 — where does the decimal point go? (a) 6.44 (b) 64.4 (c) 0.644 (d) 0.0644
32. 32.4.7 × 4.3 — where does the decimal point go? (a) 0.2021 (b) 20.21 (c) 202.1 (d) 2.021
33. 33.9.8 × 4.6 — where does the decimal point go? (a) 45.08 (b) 4.508 (c) 0.4508 (d) 450.8
34. 34.1.7 × 0.7 — where does the decimal point go? (a) 0.119 (b) 1.19 (c) 11.9 (d) 0.0119
35. 35.1.9 × 2.3 — where does the decimal point go? (a) 0.437 (b) 4.37 (c) 43.7 (d) 0.0437
36. 36.0.27 × 4.6 — where does the decimal point go? (a) 12.42 (b) 0.01242 (c) 1.242 (d) 0.1242
37. 37.0.63 × 27 — where does the decimal point go? (a) 17.01 (b) 0.1701 (c) 170.1 (d) 1.701
38. 38.1.8 × 32 — where does the decimal point go? (a) 0.576 (b) 57.6 (c) 5.76 (d) 576
39. 39.0.13 × 2.7 — where does the decimal point go? (a) 0.00351 (b) 0.0351 (c) 3.51 (d) 0.351
40. 40.0.41 × 0.4 — where does the decimal point go? (a) 0.164 (b) 1.64 (c) 0.0164 (d) 0.00164

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