Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 381 · 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. 1.0.28 × 3 — where does the decimal point go? (a) 0.084 (b) 0.0084 (c) 0.84 (d) 8.4
2. 2.0.71 × 1.7 — where does the decimal point go? (a) 0.1207 (b) 1.207 (c) 12.07 (d) 0.01207
3. 3.0.39 × 0.5 — where does the decimal point go? (a) 0.0195 (b) 1.95 (c) 0.195 (d) 0.00195
4. 4.0.47 × 3.8 — where does the decimal point go? (a) 17.86 (b) 1.786 (c) 0.1786 (d) 0.01786
5. 5.9.8 × 22 — where does the decimal point go? (a) 2156 (b) 2.156 (c) 215.6 (d) 21.56
6. 6.9.1 × 3 — where does the decimal point go? (a) 27.3 (b) 0.273 (c) 2.73 (d) 273
7. 7.0.37 × 34 — where does the decimal point go? (a) 12.58 (b) 1.258 (c) 0.1258 (d) 125.8
8. 8.0.66 × 4.3 — where does the decimal point go? (a) 2.838 (b) 0.2838 (c) 28.38 (d) 0.02838
9. 9.9.5 × 0.3 — where does the decimal point go? (a) 28.5 (b) 2.85 (c) 0.0285 (d) 0.285
10. 10.3.4 × 3.1 — where does the decimal point go? (a) 0.1054 (b) 105.4 (c) 1.054 (d) 10.54
11. 11.0.93 × 3.2 — where does the decimal point go? (a) 29.76 (b) 2.976 (c) 0.02976 (d) 0.2976
12. 12.0.36 × 0.7 — where does the decimal point go? (a) 0.00252 (b) 2.52 (c) 0.252 (d) 0.0252
13. 13.8.6 × 0.6 — where does the decimal point go? (a) 5.16 (b) 0.516 (c) 0.0516 (d) 51.6
14. 14.0.63 × 42 — where does the decimal point go? (a) 26.46 (b) 0.2646 (c) 2.646 (d) 264.6
15. 15.7.7 × 3 — where does the decimal point go? (a) 2.31 (b) 0.231 (c) 231 (d) 23.1
16. 16.8.1 × 27 — where does the decimal point go? (a) 218.7 (b) 21.87 (c) 2187 (d) 2.187
17. 17.0.42 × 38 — where does the decimal point go? (a) 159.6 (b) 15.96 (c) 1.596 (d) 0.1596
18. 18.5.4 × 0.9 — where does the decimal point go? (a) 4.86 (b) 48.6 (c) 0.0486 (d) 0.486
19. 19.0.82 × 28 — where does the decimal point go? (a) 0.2296 (b) 22.96 (c) 2.296 (d) 229.6
20. 20.2.7 × 5 — where does the decimal point go? (a) 13.5 (b) 135 (c) 0.135 (d) 1.35
21. 21.4.4 × 8 — where does the decimal point go? (a) 35.2 (b) 352 (c) 3.52 (d) 0.352
22. 22.6.8 × 0.7 — where does the decimal point go? (a) 4.76 (b) 47.6 (c) 0.0476 (d) 0.476
23. 23.0.48 × 0.4 — where does the decimal point go? (a) 0.0192 (b) 1.92 (c) 0.00192 (d) 0.192
24. 24.3.9 × 4 — where does the decimal point go? (a) 0.156 (b) 15.6 (c) 156 (d) 1.56
25. 25.1.7 × 28 — where does the decimal point go? (a) 476 (b) 4.76 (c) 47.6 (d) 0.476
26. 26.0.43 × 9 — where does the decimal point go? (a) 3.87 (b) 0.0387 (c) 0.387 (d) 38.7
27. 27.1.6 × 19 — where does the decimal point go? (a) 3.04 (b) 304 (c) 0.304 (d) 30.4
28. 28.6.9 × 4.1 — where does the decimal point go? (a) 28.29 (b) 0.2829 (c) 2.829 (d) 282.9
29. 29.5.5 × 0.7 — where does the decimal point go? (a) 3.85 (b) 0.385 (c) 0.0385 (d) 38.5
30. 30.1.3 × 0.8 — where does the decimal point go? (a) 1.04 (b) 0.0104 (c) 10.4 (d) 0.104
31. 31.0.37 × 3.7 — where does the decimal point go? (a) 13.69 (b) 1.369 (c) 0.01369 (d) 0.1369
32. 32.0.46 × 49 — where does the decimal point go? (a) 22.54 (b) 2.254 (c) 0.2254 (d) 225.4
33. 33.4.7 × 5 — where does the decimal point go? (a) 235 (b) 23.5 (c) 0.235 (d) 2.35
34. 34.8.4 × 1.2 — where does the decimal point go? (a) 100.8 (b) 0.1008 (c) 1.008 (d) 10.08
35. 35.0.83 × 0.4 — where does the decimal point go? (a) 0.0332 (b) 0.00332 (c) 0.332 (d) 3.32
36. 36.6.1 × 3 — where does the decimal point go? (a) 1.83 (b) 183 (c) 18.3 (d) 0.183
37. 37.0.98 × 1.2 — where does the decimal point go? (a) 0.1176 (b) 1.176 (c) 11.76 (d) 0.01176
38. 38.0.63 × 4 — where does the decimal point go? (a) 2.52 (b) 25.2 (c) 0.0252 (d) 0.252
39. 39.0.63 × 14 — where does the decimal point go? (a) 8.82 (b) 0.0882 (c) 88.2 (d) 0.882
40. 40.0.79 × 6 — where does the decimal point go? (a) 4.74 (b) 0.474 (c) 47.4 (d) 0.0474

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