Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 302 · 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. 1.7.6 × 0.3 — where does the decimal point go? (a) 2.28 (b) 0.228 (c) 22.8 (d) 0.0228
2. 2.9.3 × 22 — where does the decimal point go? (a) 2046 (b) 2.046 (c) 20.46 (d) 204.6
3. 3.0.77 × 42 — where does the decimal point go? (a) 0.3234 (b) 3.234 (c) 32.34 (d) 323.4
4. 4.4.4 × 38 — where does the decimal point go? (a) 1672 (b) 1.672 (c) 16.72 (d) 167.2
5. 5.0.94 × 24 — where does the decimal point go? (a) 2.256 (b) 22.56 (c) 225.6 (d) 0.2256
6. 6.2.9 × 1.8 — where does the decimal point go? (a) 52.2 (b) 0.522 (c) 5.22 (d) 0.0522
7. 7.0.67 × 0.8 — where does the decimal point go? (a) 0.536 (b) 0.0536 (c) 0.00536 (d) 5.36
8. 8.5.9 × 15 — where does the decimal point go? (a) 8.85 (b) 885 (c) 88.5 (d) 0.885
9. 9.7.2 × 0.9 — where does the decimal point go? (a) 64.8 (b) 0.0648 (c) 6.48 (d) 0.648
10. 10.0.59 × 0.6 — where does the decimal point go? (a) 0.354 (b) 0.0354 (c) 0.00354 (d) 3.54
11. 11.6.9 × 42 — where does the decimal point go? (a) 2.898 (b) 28.98 (c) 2898 (d) 289.8
12. 12.3.8 × 24 — where does the decimal point go? (a) 91.2 (b) 0.912 (c) 912 (d) 9.12
13. 13.9.3 × 38 — where does the decimal point go? (a) 35.34 (b) 353.4 (c) 3.534 (d) 3534
14. 14.1.4 × 0.4 — where does the decimal point go? (a) 0.0056 (b) 5.6 (c) 0.056 (d) 0.56
15. 15.0.12 × 0.2 — where does the decimal point go? (a) 0.24 (b) 0.00024 (c) 0.024 (d) 0.0024
16. 16.1.8 × 33 — where does the decimal point go? (a) 59.4 (b) 5.94 (c) 0.594 (d) 594
17. 17.0.42 × 2.4 — where does the decimal point go? (a) 10.08 (b) 1.008 (c) 0.01008 (d) 0.1008
18. 18.4.9 × 0.9 — where does the decimal point go? (a) 0.441 (b) 4.41 (c) 0.0441 (d) 44.1
19. 19.3.6 × 0.3 — where does the decimal point go? (a) 0.0108 (b) 0.108 (c) 1.08 (d) 10.8
20. 20.0.37 × 43 — where does the decimal point go? (a) 15.91 (b) 159.1 (c) 1.591 (d) 0.1591
21. 21.0.84 × 2.1 — where does the decimal point go? (a) 1.764 (b) 0.1764 (c) 17.64 (d) 0.01764
22. 22.0.19 × 41 — where does the decimal point go? (a) 0.779 (b) 7.79 (c) 0.0779 (d) 77.9
23. 23.8.9 × 0.8 — where does the decimal point go? (a) 0.712 (b) 71.2 (c) 7.12 (d) 0.0712
24. 24.0.38 × 49 — where does the decimal point go? (a) 1.862 (b) 186.2 (c) 18.62 (d) 0.1862
25. 25.0.62 × 0.2 — where does the decimal point go? (a) 0.00124 (b) 0.0124 (c) 1.24 (d) 0.124
26. 26.0.92 × 0.8 — where does the decimal point go? (a) 7.36 (b) 0.736 (c) 0.00736 (d) 0.0736
27. 27.3.9 × 13 — where does the decimal point go? (a) 50.7 (b) 5.07 (c) 0.507 (d) 507
28. 28.6.3 × 5 — where does the decimal point go? (a) 31.5 (b) 0.315 (c) 3.15 (d) 315
29. 29.0.31 × 16 — where does the decimal point go? (a) 4.96 (b) 0.0496 (c) 0.496 (d) 49.6
30. 30.5.2 × 0.9 — where does the decimal point go? (a) 0.0468 (b) 4.68 (c) 46.8 (d) 0.468
31. 31.0.18 × 22 — where does the decimal point go? (a) 39.6 (b) 3.96 (c) 0.396 (d) 0.0396
32. 32.0.92 × 3 — where does the decimal point go? (a) 27.6 (b) 0.0276 (c) 2.76 (d) 0.276
33. 33.8.4 × 0.4 — where does the decimal point go? (a) 33.6 (b) 0.0336 (c) 0.336 (d) 3.36
34. 34.2.3 × 0.4 — where does the decimal point go? (a) 9.2 (b) 0.092 (c) 0.0092 (d) 0.92
35. 35.3.7 × 4 — where does the decimal point go? (a) 148 (b) 14.8 (c) 0.148 (d) 1.48
36. 36.7.2 × 0.7 — where does the decimal point go? (a) 0.0504 (b) 5.04 (c) 50.4 (d) 0.504
37. 37.1.4 × 0.7 — where does the decimal point go? (a) 0.98 (b) 0.098 (c) 0.0098 (d) 9.8
38. 38.9.6 × 24 — where does the decimal point go? (a) 230.4 (b) 2.304 (c) 23.04 (d) 2304
39. 39.2.3 × 3.5 — where does the decimal point go? (a) 0.0805 (b) 8.05 (c) 80.5 (d) 0.805
40. 40.1.7 × 0.3 — where does the decimal point go? (a) 5.1 (b) 0.0051 (c) 0.051 (d) 0.51

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