Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 154 · 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. 1.6.1 × 1.4 — where does the decimal point go? (a) 85.4 (b) 0.0854 (c) 8.54 (d) 0.854
2. 2.0.53 × 0.3 — where does the decimal point go? (a) 0.159 (b) 0.0159 (c) 0.00159 (d) 1.59
3. 3.4.7 × 3.9 — where does the decimal point go? (a) 0.1833 (b) 183.3 (c) 1.833 (d) 18.33
4. 4.4.2 × 1.6 — where does the decimal point go? (a) 0.672 (b) 6.72 (c) 67.2 (d) 0.0672
5. 5.3.9 × 0.7 — where does the decimal point go? (a) 0.0273 (b) 27.3 (c) 2.73 (d) 0.273
6. 6.9.1 × 3 — where does the decimal point go? (a) 27.3 (b) 0.273 (c) 273 (d) 2.73
7. 7.0.69 × 26 — where does the decimal point go? (a) 179.4 (b) 17.94 (c) 1.794 (d) 0.1794
8. 8.9.9 × 48 — where does the decimal point go? (a) 47.52 (b) 475.2 (c) 4752 (d) 4.752
9. 9.0.83 × 3 — where does the decimal point go? (a) 0.0249 (b) 24.9 (c) 2.49 (d) 0.249
10. 10.7.5 × 43 — where does the decimal point go? (a) 3.225 (b) 32.25 (c) 3225 (d) 322.5
11. 11.2.4 × 0.4 — where does the decimal point go? (a) 9.6 (b) 0.096 (c) 0.0096 (d) 0.96
12. 12.0.17 × 31 — where does the decimal point go? (a) 52.7 (b) 0.527 (c) 0.0527 (d) 5.27
13. 13.2.1 × 9 — where does the decimal point go? (a) 18.9 (b) 1.89 (c) 189 (d) 0.189
14. 14.2.2 × 7 — where does the decimal point go? (a) 0.154 (b) 154 (c) 15.4 (d) 1.54
15. 15.8.3 × 0.3 — where does the decimal point go? (a) 24.9 (b) 0.0249 (c) 0.249 (d) 2.49
16. 16.0.36 × 0.6 — where does the decimal point go? (a) 0.0216 (b) 0.216 (c) 0.00216 (d) 2.16
17. 17.7.4 × 0.2 — where does the decimal point go? (a) 1.48 (b) 0.148 (c) 14.8 (d) 0.0148
18. 18.7.5 × 29 — where does the decimal point go? (a) 21.75 (b) 2175 (c) 217.5 (d) 2.175
19. 19.0.77 × 26 — where does the decimal point go? (a) 200.2 (b) 20.02 (c) 0.2002 (d) 2.002
20. 20.9.7 × 1.5 — where does the decimal point go? (a) 14.55 (b) 145.5 (c) 1.455 (d) 0.1455
21. 21.7.1 × 2.2 — where does the decimal point go? (a) 0.1562 (b) 1.562 (c) 15.62 (d) 156.2
22. 22.5.5 × 1.5 — where does the decimal point go? (a) 8.25 (b) 0.0825 (c) 82.5 (d) 0.825
23. 23.0.86 × 0.6 — where does the decimal point go? (a) 0.516 (b) 0.0516 (c) 0.00516 (d) 5.16
24. 24.0.44 × 1.3 — where does the decimal point go? (a) 0.00572 (b) 0.572 (c) 5.72 (d) 0.0572
25. 25.8.1 × 25 — where does the decimal point go? (a) 2.025 (b) 202.5 (c) 2025 (d) 20.25
26. 26.0.71 × 18 — where does the decimal point go? (a) 12.78 (b) 1.278 (c) 127.8 (d) 0.1278
27. 27.0.76 × 0.3 — where does the decimal point go? (a) 2.28 (b) 0.228 (c) 0.0228 (d) 0.00228
28. 28.6.8 × 4.3 — where does the decimal point go? (a) 29.24 (b) 0.2924 (c) 292.4 (d) 2.924
29. 29.0.33 × 4.1 — where does the decimal point go? (a) 13.53 (b) 0.1353 (c) 1.353 (d) 0.01353
30. 30.0.78 × 0.6 — where does the decimal point go? (a) 0.468 (b) 0.0468 (c) 4.68 (d) 0.00468
31. 31.7.1 × 2 — where does the decimal point go? (a) 0.142 (b) 142 (c) 14.2 (d) 1.42
32. 32.0.93 × 45 — where does the decimal point go? (a) 418.5 (b) 4.185 (c) 0.4185 (d) 41.85
33. 33.9.7 × 0.2 — where does the decimal point go? (a) 0.194 (b) 0.0194 (c) 19.4 (d) 1.94
34. 34.2.2 × 3 — where does the decimal point go? (a) 0.66 (b) 66 (c) 6.6 (d) 0.066
35. 35.0.92 × 48 — where does the decimal point go? (a) 0.4416 (b) 44.16 (c) 4.416 (d) 441.6
36. 36.7.6 × 6 — where does the decimal point go? (a) 4.56 (b) 456 (c) 45.6 (d) 0.456
37. 37.0.23 × 3.9 — where does the decimal point go? (a) 0.897 (b) 0.0897 (c) 0.00897 (d) 8.97
38. 38.5.8 × 0.2 — where does the decimal point go? (a) 0.0116 (b) 1.16 (c) 0.116 (d) 11.6
39. 39.0.16 × 2.7 — where does the decimal point go? (a) 0.0432 (b) 0.00432 (c) 4.32 (d) 0.432
40. 40.0.76 × 4.4 — where does the decimal point go? (a) 3.344 (b) 0.3344 (c) 33.44 (d) 0.03344

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