Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 180 · 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. 1.1.2 × 0.2 — where does the decimal point go? (a) 0.24 (b) 2.4 (c) 0.0024 (d) 0.024
2. 2.0.73 × 12 — where does the decimal point go? (a) 0.876 (b) 8.76 (c) 0.0876 (d) 87.6
3. 3.2.6 × 3 — where does the decimal point go? (a) 0.78 (b) 78 (c) 7.8 (d) 0.078
4. 4.0.31 × 0.8 — where does the decimal point go? (a) 2.48 (b) 0.0248 (c) 0.248 (d) 0.00248
5. 5.0.41 × 7 — where does the decimal point go? (a) 0.287 (b) 28.7 (c) 2.87 (d) 0.0287
6. 6.8.1 × 3 — where does the decimal point go? (a) 243 (b) 0.243 (c) 2.43 (d) 24.3
7. 7.3.1 × 21 — where does the decimal point go? (a) 6.51 (b) 0.651 (c) 651 (d) 65.1
8. 8.9.4 × 2.6 — where does the decimal point go? (a) 2.444 (b) 0.2444 (c) 24.44 (d) 244.4
9. 9.0.63 × 3 — where does the decimal point go? (a) 18.9 (b) 1.89 (c) 0.0189 (d) 0.189
10. 10.1.6 × 4.1 — where does the decimal point go? (a) 0.656 (b) 0.0656 (c) 65.6 (d) 6.56
11. 11.0.59 × 0.7 — where does the decimal point go? (a) 0.413 (b) 4.13 (c) 0.00413 (d) 0.0413
12. 12.6.3 × 8 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 0.504 (d) 504
13. 13.7.9 × 0.9 — where does the decimal point go? (a) 0.0711 (b) 71.1 (c) 0.711 (d) 7.11
14. 14.0.29 × 17 — where does the decimal point go? (a) 0.0493 (b) 49.3 (c) 0.493 (d) 4.93
15. 15.0.69 × 31 — where does the decimal point go? (a) 2.139 (b) 21.39 (c) 213.9 (d) 0.2139
16. 16.0.16 × 11 — where does the decimal point go? (a) 17.6 (b) 0.176 (c) 1.76 (d) 0.0176
17. 17.0.92 × 4.3 — where does the decimal point go? (a) 0.3956 (b) 0.03956 (c) 39.56 (d) 3.956
18. 18.0.36 × 1.1 — where does the decimal point go? (a) 0.396 (b) 0.0396 (c) 0.00396 (d) 3.96
19. 19.4.6 × 14 — where does the decimal point go? (a) 6.44 (b) 64.4 (c) 644 (d) 0.644
20. 20.0.98 × 13 — where does the decimal point go? (a) 1.274 (b) 12.74 (c) 127.4 (d) 0.1274
21. 21.9.2 × 4 — where does the decimal point go? (a) 0.368 (b) 368 (c) 36.8 (d) 3.68
22. 22.3.2 × 0.9 — where does the decimal point go? (a) 28.8 (b) 2.88 (c) 0.0288 (d) 0.288
23. 23.4.5 × 37 — where does the decimal point go? (a) 1.665 (b) 16.65 (c) 1665 (d) 166.5
24. 24.4.5 × 9 — where does the decimal point go? (a) 405 (b) 0.405 (c) 40.5 (d) 4.05
25. 25.0.31 × 7 — where does the decimal point go? (a) 0.217 (b) 0.0217 (c) 2.17 (d) 21.7
26. 26.0.78 × 4 — where does the decimal point go? (a) 31.2 (b) 3.12 (c) 0.0312 (d) 0.312
27. 27.0.79 × 21 — where does the decimal point go? (a) 0.1659 (b) 165.9 (c) 16.59 (d) 1.659
28. 28.6.6 × 3.4 — where does the decimal point go? (a) 224.4 (b) 0.2244 (c) 2.244 (d) 22.44
29. 29.2.3 × 3.5 — where does the decimal point go? (a) 8.05 (b) 0.0805 (c) 80.5 (d) 0.805
30. 30.0.14 × 0.4 — where does the decimal point go? (a) 0.00056 (b) 0.56 (c) 0.0056 (d) 0.056
31. 31.2.8 × 17 — where does the decimal point go? (a) 476 (b) 0.476 (c) 4.76 (d) 47.6
32. 32.0.86 × 2.2 — where does the decimal point go? (a) 0.01892 (b) 0.1892 (c) 18.92 (d) 1.892
33. 33.1.9 × 15 — where does the decimal point go? (a) 28.5 (b) 2.85 (c) 0.285 (d) 285
34. 34.8.6 × 41 — where does the decimal point go? (a) 352.6 (b) 3526 (c) 35.26 (d) 3.526
35. 35.9.7 × 4 — where does the decimal point go? (a) 38.8 (b) 3.88 (c) 0.388 (d) 388
36. 36.0.53 × 5 — where does the decimal point go? (a) 2.65 (b) 0.265 (c) 26.5 (d) 0.0265
37. 37.9.6 × 12 — where does the decimal point go? (a) 1.152 (b) 115.2 (c) 11.52 (d) 1152
38. 38.0.98 × 1.4 — where does the decimal point go? (a) 1.372 (b) 13.72 (c) 0.01372 (d) 0.1372
39. 39.0.35 × 7 — where does the decimal point go? (a) 24.5 (b) 0.0245 (c) 0.245 (d) 2.45
40. 40.4.5 × 7 — where does the decimal point go? (a) 315 (b) 0.315 (c) 3.15 (d) 31.5

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