Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 21 · 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. 1.4.4 × 0.7 — where does the decimal point go? (a) 3.08 (b) 0.308 (c) 0.0308 (d) 30.8
2. 2.0.97 × 0.7 — where does the decimal point go? (a) 0.679 (b) 6.79 (c) 0.0679 (d) 0.00679
3. 3.0.92 × 2 — where does the decimal point go? (a) 1.84 (b) 0.184 (c) 0.0184 (d) 18.4
4. 4.4.6 × 1.7 — where does the decimal point go? (a) 78.2 (b) 7.82 (c) 0.0782 (d) 0.782
5. 5.0.57 × 3.6 — where does the decimal point go? (a) 0.2052 (b) 0.02052 (c) 20.52 (d) 2.052
6. 6.9.9 × 8 — where does the decimal point go? (a) 0.792 (b) 79.2 (c) 792 (d) 7.92
7. 7.0.68 × 0.6 — where does the decimal point go? (a) 4.08 (b) 0.0408 (c) 0.408 (d) 0.00408
8. 8.0.16 × 38 — where does the decimal point go? (a) 0.0608 (b) 60.8 (c) 6.08 (d) 0.608
9. 9.1.5 × 0.3 — where does the decimal point go? (a) 4.5 (b) 0.0045 (c) 0.45 (d) 0.045
10. 10.9.1 × 6 — where does the decimal point go? (a) 0.546 (b) 5.46 (c) 546 (d) 54.6
11. 11.0.81 × 1.7 — where does the decimal point go? (a) 0.1377 (b) 13.77 (c) 1.377 (d) 0.01377
12. 12.3.5 × 23 — where does the decimal point go? (a) 80.5 (b) 8.05 (c) 0.805 (d) 805
13. 13.2.1 × 48 — where does the decimal point go? (a) 100.8 (b) 10.08 (c) 1008 (d) 1.008
14. 14.7.9 × 1.6 — where does the decimal point go? (a) 126.4 (b) 1.264 (c) 0.1264 (d) 12.64
15. 15.7.8 × 0.3 — where does the decimal point go? (a) 0.0234 (b) 0.234 (c) 2.34 (d) 23.4
16. 16.7.2 × 7 — where does the decimal point go? (a) 504 (b) 50.4 (c) 0.504 (d) 5.04
17. 17.0.62 × 9 — where does the decimal point go? (a) 55.8 (b) 5.58 (c) 0.558 (d) 0.0558
18. 18.0.48 × 2.6 — where does the decimal point go? (a) 1.248 (b) 0.1248 (c) 12.48 (d) 0.01248
19. 19.0.51 × 4.5 — where does the decimal point go? (a) 22.95 (b) 0.02295 (c) 2.295 (d) 0.2295
20. 20.0.85 × 5 — where does the decimal point go? (a) 4.25 (b) 0.0425 (c) 42.5 (d) 0.425
21. 21.0.54 × 22 — where does the decimal point go? (a) 0.1188 (b) 118.8 (c) 1.188 (d) 11.88
22. 22.5.5 × 5 — where does the decimal point go? (a) 27.5 (b) 0.275 (c) 275 (d) 2.75
23. 23.0.43 × 44 — where does the decimal point go? (a) 1.892 (b) 18.92 (c) 189.2 (d) 0.1892
24. 24.3.9 × 19 — where does the decimal point go? (a) 7.41 (b) 0.741 (c) 74.1 (d) 741
25. 25.0.78 × 38 — where does the decimal point go? (a) 29.64 (b) 0.2964 (c) 296.4 (d) 2.964
26. 26.2.7 × 26 — where does the decimal point go? (a) 0.702 (b) 702 (c) 70.2 (d) 7.02
27. 27.8.4 × 2 — where does the decimal point go? (a) 1.68 (b) 0.168 (c) 16.8 (d) 168
28. 28.2.8 × 6 — where does the decimal point go? (a) 1.68 (b) 0.168 (c) 168 (d) 16.8
29. 29.9.4 × 0.3 — where does the decimal point go? (a) 2.82 (b) 0.0282 (c) 0.282 (d) 28.2
30. 30.6.1 × 3.9 — where does the decimal point go? (a) 23.79 (b) 0.2379 (c) 237.9 (d) 2.379
31. 31.3.7 × 49 — where does the decimal point go? (a) 18.13 (b) 181.3 (c) 1.813 (d) 1813
32. 32.0.45 × 7 — where does the decimal point go? (a) 0.315 (b) 3.15 (c) 31.5 (d) 0.0315
33. 33.8.1 × 1.1 — where does the decimal point go? (a) 0.0891 (b) 0.891 (c) 8.91 (d) 89.1
34. 34.0.46 × 4 — where does the decimal point go? (a) 18.4 (b) 0.0184 (c) 0.184 (d) 1.84
35. 35.0.69 × 0.6 — where does the decimal point go? (a) 0.00414 (b) 4.14 (c) 0.0414 (d) 0.414
36. 36.0.61 × 9 — where does the decimal point go? (a) 0.549 (b) 5.49 (c) 0.0549 (d) 54.9
37. 37.2.4 × 6 — where does the decimal point go? (a) 0.144 (b) 144 (c) 14.4 (d) 1.44
38. 38.0.51 × 44 — where does the decimal point go? (a) 22.44 (b) 224.4 (c) 2.244 (d) 0.2244
39. 39.0.41 × 2.8 — where does the decimal point go? (a) 0.1148 (b) 1.148 (c) 0.01148 (d) 11.48
40. 40.7.1 × 45 — where does the decimal point go? (a) 319.5 (b) 3195 (c) 3.195 (d) 31.95

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