Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 350 · 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. 1.9.8 × 44 — where does the decimal point go? (a) 4312 (b) 4.312 (c) 431.2 (d) 43.12
2. 2.4.6 × 8 — where does the decimal point go? (a) 36.8 (b) 0.368 (c) 3.68 (d) 368
3. 3.0.49 × 4.4 — where does the decimal point go? (a) 0.02156 (b) 2.156 (c) 0.2156 (d) 21.56
4. 4.4.3 × 2 — where does the decimal point go? (a) 0.86 (b) 0.086 (c) 8.6 (d) 86
5. 5.5.5 × 0.5 — where does the decimal point go? (a) 2.75 (b) 0.275 (c) 0.0275 (d) 27.5
6. 6.0.27 × 0.4 — where does the decimal point go? (a) 0.108 (b) 0.00108 (c) 1.08 (d) 0.0108
7. 7.0.62 × 18 — where does the decimal point go? (a) 1.116 (b) 111.6 (c) 0.1116 (d) 11.16
8. 8.3.3 × 0.6 — where does the decimal point go? (a) 0.198 (b) 19.8 (c) 1.98 (d) 0.0198
9. 9.4.7 × 0.2 — where does the decimal point go? (a) 0.0094 (b) 0.94 (c) 0.094 (d) 9.4
10. 10.8.8 × 0.9 — where does the decimal point go? (a) 0.0792 (b) 0.792 (c) 7.92 (d) 79.2
11. 11.0.17 × 4 — where does the decimal point go? (a) 0.068 (b) 0.68 (c) 6.8 (d) 0.0068
12. 12.0.73 × 1.5 — where does the decimal point go? (a) 1.095 (b) 0.1095 (c) 0.01095 (d) 10.95
13. 13.0.18 × 9 — where does the decimal point go? (a) 1.62 (b) 0.162 (c) 0.0162 (d) 16.2
14. 14.0.93 × 6 — where does the decimal point go? (a) 55.8 (b) 0.0558 (c) 5.58 (d) 0.558
15. 15.0.42 × 6 — where does the decimal point go? (a) 0.252 (b) 0.0252 (c) 2.52 (d) 25.2
16. 16.6.2 × 0.8 — where does the decimal point go? (a) 4.96 (b) 0.0496 (c) 0.496 (d) 49.6
17. 17.0.17 × 7 — where does the decimal point go? (a) 11.9 (b) 1.19 (c) 0.119 (d) 0.0119
18. 18.6.3 × 37 — where does the decimal point go? (a) 2.331 (b) 233.1 (c) 23.31 (d) 2331
19. 19.5.9 × 4.3 — where does the decimal point go? (a) 25.37 (b) 0.2537 (c) 2.537 (d) 253.7
20. 20.0.57 × 2 — where does the decimal point go? (a) 0.0114 (b) 11.4 (c) 1.14 (d) 0.114
21. 21.8.8 × 36 — where does the decimal point go? (a) 3168 (b) 3.168 (c) 316.8 (d) 31.68
22. 22.0.18 × 21 — where does the decimal point go? (a) 0.378 (b) 0.0378 (c) 3.78 (d) 37.8
23. 23.1.9 × 4 — where does the decimal point go? (a) 0.76 (b) 76 (c) 7.6 (d) 0.076
24. 24.0.27 × 6 — where does the decimal point go? (a) 1.62 (b) 0.162 (c) 0.0162 (d) 16.2
25. 25.7.6 × 7 — where does the decimal point go? (a) 53.2 (b) 5.32 (c) 0.532 (d) 532
26. 26.2.9 × 0.4 — where does the decimal point go? (a) 1.16 (b) 11.6 (c) 0.0116 (d) 0.116
27. 27.0.73 × 4.6 — where does the decimal point go? (a) 33.58 (b) 3.358 (c) 0.3358 (d) 0.03358
28. 28.0.17 × 3 — where does the decimal point go? (a) 0.051 (b) 5.1 (c) 0.0051 (d) 0.51
29. 29.0.46 × 4 — where does the decimal point go? (a) 0.184 (b) 0.0184 (c) 18.4 (d) 1.84
30. 30.9.7 × 0.4 — where does the decimal point go? (a) 3.88 (b) 0.0388 (c) 38.8 (d) 0.388
31. 31.2.6 × 0.2 — where does the decimal point go? (a) 0.52 (b) 0.052 (c) 0.0052 (d) 5.2
32. 32.8.2 × 19 — where does the decimal point go? (a) 1.558 (b) 1558 (c) 15.58 (d) 155.8
33. 33.0.25 × 3 — where does the decimal point go? (a) 7.5 (b) 0.75 (c) 0.075 (d) 0.0075
34. 34.0.27 × 9 — where does the decimal point go? (a) 0.243 (b) 0.0243 (c) 24.3 (d) 2.43
35. 35.2.4 × 4 — where does the decimal point go? (a) 9.6 (b) 0.096 (c) 0.96 (d) 96
36. 36.0.68 × 43 — where does the decimal point go? (a) 0.2924 (b) 292.4 (c) 29.24 (d) 2.924
37. 37.8.1 × 3 — where does the decimal point go? (a) 243 (b) 2.43 (c) 24.3 (d) 0.243
38. 38.0.28 × 19 — where does the decimal point go? (a) 0.0532 (b) 5.32 (c) 53.2 (d) 0.532
39. 39.0.28 × 4.6 — where does the decimal point go? (a) 12.88 (b) 1.288 (c) 0.1288 (d) 0.01288
40. 40.7.1 × 43 — where does the decimal point go? (a) 3053 (b) 30.53 (c) 305.3 (d) 3.053

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