Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 109 · 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. 1.0.21 × 4.5 — where does the decimal point go? (a) 9.45 (b) 0.0945 (c) 0.945 (d) 0.00945
2. 2.2.5 × 0.3 — where does the decimal point go? (a) 7.5 (b) 0.0075 (c) 0.75 (d) 0.075
3. 3.1.7 × 0.9 — where does the decimal point go? (a) 0.0153 (b) 1.53 (c) 0.153 (d) 15.3
4. 4.9.7 × 0.5 — where does the decimal point go? (a) 0.485 (b) 4.85 (c) 48.5 (d) 0.0485
5. 5.7.6 × 31 — where does the decimal point go? (a) 2.356 (b) 235.6 (c) 2356 (d) 23.56
6. 6.1.8 × 11 — where does the decimal point go? (a) 198 (b) 0.198 (c) 19.8 (d) 1.98
7. 7.8.9 × 2 — where does the decimal point go? (a) 17.8 (b) 1.78 (c) 178 (d) 0.178
8. 8.0.58 × 4.2 — where does the decimal point go? (a) 2.436 (b) 0.02436 (c) 0.2436 (d) 24.36
9. 9.1.7 × 29 — where does the decimal point go? (a) 4.93 (b) 0.493 (c) 493 (d) 49.3
10. 10.4.9 × 1.2 — where does the decimal point go? (a) 5.88 (b) 0.588 (c) 0.0588 (d) 58.8
11. 11.0.71 × 6 — where does the decimal point go? (a) 0.0426 (b) 0.426 (c) 42.6 (d) 4.26
12. 12.0.52 × 2 — where does the decimal point go? (a) 1.04 (b) 0.0104 (c) 0.104 (d) 10.4
13. 13.1.9 × 0.4 — where does the decimal point go? (a) 0.076 (b) 0.0076 (c) 7.6 (d) 0.76
14. 14.1.3 × 3 — where does the decimal point go? (a) 39 (b) 0.039 (c) 3.9 (d) 0.39
15. 15.3.9 × 38 — where does the decimal point go? (a) 14.82 (b) 1.482 (c) 148.2 (d) 1482
16. 16.9.6 × 0.6 — where does the decimal point go? (a) 0.0576 (b) 5.76 (c) 0.576 (d) 57.6
17. 17.8.8 × 2.3 — where does the decimal point go? (a) 2.024 (b) 202.4 (c) 0.2024 (d) 20.24
18. 18.7.2 × 3.2 — where does the decimal point go? (a) 23.04 (b) 230.4 (c) 0.2304 (d) 2.304
19. 19.0.54 × 1.7 — where does the decimal point go? (a) 0.918 (b) 0.0918 (c) 0.00918 (d) 9.18
20. 20.0.19 × 8 — where does the decimal point go? (a) 0.152 (b) 0.0152 (c) 15.2 (d) 1.52
21. 21.6.6 × 16 — where does the decimal point go? (a) 1.056 (b) 10.56 (c) 105.6 (d) 1056
22. 22.9.9 × 49 — where does the decimal point go? (a) 485.1 (b) 4851 (c) 4.851 (d) 48.51
23. 23.0.74 × 16 — where does the decimal point go? (a) 1.184 (b) 118.4 (c) 0.1184 (d) 11.84
24. 24.1.8 × 0.7 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 12.6 (d) 0.126
25. 25.0.61 × 0.2 — where does the decimal point go? (a) 0.0122 (b) 0.122 (c) 0.00122 (d) 1.22
26. 26.8.9 × 12 — where does the decimal point go? (a) 1.068 (b) 1068 (c) 106.8 (d) 10.68
27. 27.8.8 × 4.9 — where does the decimal point go? (a) 0.4312 (b) 4.312 (c) 431.2 (d) 43.12
28. 28.9.4 × 4 — where does the decimal point go? (a) 0.376 (b) 3.76 (c) 376 (d) 37.6
29. 29.4.9 × 1.6 — where does the decimal point go? (a) 0.784 (b) 0.0784 (c) 78.4 (d) 7.84
30. 30.0.81 × 39 — where does the decimal point go? (a) 315.9 (b) 0.3159 (c) 3.159 (d) 31.59
31. 31.0.69 × 0.4 — where does the decimal point go? (a) 0.00276 (b) 0.276 (c) 2.76 (d) 0.0276
32. 32.8.7 × 25 — where does the decimal point go? (a) 2175 (b) 2.175 (c) 217.5 (d) 21.75
33. 33.1.4 × 0.3 — where does the decimal point go? (a) 0.42 (b) 0.042 (c) 0.0042 (d) 4.2
34. 34.3.8 × 33 — where does the decimal point go? (a) 12.54 (b) 125.4 (c) 1.254 (d) 1254
35. 35.0.22 × 48 — where does the decimal point go? (a) 1.056 (b) 105.6 (c) 10.56 (d) 0.1056
36. 36.8.2 × 9 — where does the decimal point go? (a) 738 (b) 73.8 (c) 0.738 (d) 7.38
37. 37.0.49 × 1.4 — where does the decimal point go? (a) 0.686 (b) 0.0686 (c) 0.00686 (d) 6.86
38. 38.0.17 × 4 — where does the decimal point go? (a) 0.0068 (b) 0.068 (c) 6.8 (d) 0.68
39. 39.2.2 × 9 — where does the decimal point go? (a) 0.198 (b) 1.98 (c) 19.8 (d) 198
40. 40.2.5 × 0.9 — where does the decimal point go? (a) 0.0225 (b) 22.5 (c) 0.225 (d) 2.25

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