Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 589 · 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. 1.0.37 × 47 — where does the decimal point go? (a) 173.9 (b) 0.1739 (c) 17.39 (d) 1.739
2. 2.0.47 × 3 — where does the decimal point go? (a) 0.0141 (b) 1.41 (c) 14.1 (d) 0.141
3. 3.0.84 × 4.3 — where does the decimal point go? (a) 3.612 (b) 0.3612 (c) 0.03612 (d) 36.12
4. 4.2.9 × 38 — where does the decimal point go? (a) 1102 (b) 110.2 (c) 1.102 (d) 11.02
5. 5.0.83 × 0.4 — where does the decimal point go? (a) 3.32 (b) 0.0332 (c) 0.332 (d) 0.00332
6. 6.0.52 × 46 — where does the decimal point go? (a) 0.2392 (b) 23.92 (c) 239.2 (d) 2.392
7. 7.6.1 × 5 — where does the decimal point go? (a) 30.5 (b) 305 (c) 3.05 (d) 0.305
8. 8.8.5 × 9 — where does the decimal point go? (a) 0.765 (b) 7.65 (c) 765 (d) 76.5
9. 9.0.77 × 0.5 — where does the decimal point go? (a) 0.0385 (b) 0.385 (c) 0.00385 (d) 3.85
10. 10.1.9 × 3 — where does the decimal point go? (a) 0.57 (b) 5.7 (c) 57 (d) 0.057
11. 11.7.2 × 41 — where does the decimal point go? (a) 29.52 (b) 295.2 (c) 2.952 (d) 2952
12. 12.0.17 × 3 — where does the decimal point go? (a) 0.51 (b) 5.1 (c) 0.0051 (d) 0.051
13. 13.9.3 × 3.9 — where does the decimal point go? (a) 362.7 (b) 0.3627 (c) 3.627 (d) 36.27
14. 14.8.6 × 1.3 — where does the decimal point go? (a) 1.118 (b) 0.1118 (c) 11.18 (d) 111.8
15. 15.0.74 × 0.7 — where does the decimal point go? (a) 5.18 (b) 0.00518 (c) 0.518 (d) 0.0518
16. 16.9.6 × 3 — where does the decimal point go? (a) 28.8 (b) 0.288 (c) 2.88 (d) 288
17. 17.9.4 × 3.3 — where does the decimal point go? (a) 3.102 (b) 0.3102 (c) 31.02 (d) 310.2
18. 18.0.97 × 0.3 — where does the decimal point go? (a) 0.291 (b) 0.0291 (c) 2.91 (d) 0.00291
19. 19.0.97 × 0.5 — where does the decimal point go? (a) 0.0485 (b) 4.85 (c) 0.00485 (d) 0.485
20. 20.3.7 × 18 — where does the decimal point go? (a) 66.6 (b) 666 (c) 6.66 (d) 0.666
21. 21.0.39 × 9 — where does the decimal point go? (a) 35.1 (b) 0.0351 (c) 3.51 (d) 0.351
22. 22.0.25 × 0.9 — where does the decimal point go? (a) 0.0225 (b) 0.225 (c) 0.00225 (d) 2.25
23. 23.0.37 × 4.6 — where does the decimal point go? (a) 17.02 (b) 0.01702 (c) 0.1702 (d) 1.702
24. 24.0.13 × 0.9 — where does the decimal point go? (a) 1.17 (b) 0.117 (c) 0.00117 (d) 0.0117
25. 25.6.8 × 24 — where does the decimal point go? (a) 1632 (b) 1.632 (c) 16.32 (d) 163.2
26. 26.0.97 × 1.2 — where does the decimal point go? (a) 0.01164 (b) 1.164 (c) 0.1164 (d) 11.64
27. 27.0.56 × 7 — where does the decimal point go? (a) 39.2 (b) 0.392 (c) 0.0392 (d) 3.92
28. 28.2.1 × 0.5 — where does the decimal point go? (a) 1.05 (b) 0.0105 (c) 10.5 (d) 0.105
29. 29.9.9 × 0.3 — where does the decimal point go? (a) 0.297 (b) 29.7 (c) 2.97 (d) 0.0297
30. 30.0.64 × 47 — where does the decimal point go? (a) 3.008 (b) 0.3008 (c) 30.08 (d) 300.8
31. 31.1.5 × 0.3 — where does the decimal point go? (a) 0.45 (b) 4.5 (c) 0.045 (d) 0.0045
32. 32.3.1 × 0.7 — where does the decimal point go? (a) 2.17 (b) 0.217 (c) 21.7 (d) 0.0217
33. 33.2.9 × 35 — where does the decimal point go? (a) 1015 (b) 10.15 (c) 1.015 (d) 101.5
34. 34.0.44 × 3.9 — where does the decimal point go? (a) 0.01716 (b) 17.16 (c) 0.1716 (d) 1.716
35. 35.0.84 × 0.7 — where does the decimal point go? (a) 5.88 (b) 0.0588 (c) 0.00588 (d) 0.588
36. 36.1.5 × 39 — where does the decimal point go? (a) 5.85 (b) 58.5 (c) 585 (d) 0.585
37. 37.6.1 × 0.8 — where does the decimal point go? (a) 48.8 (b) 0.0488 (c) 0.488 (d) 4.88
38. 38.5.3 × 0.3 — where does the decimal point go? (a) 15.9 (b) 1.59 (c) 0.159 (d) 0.0159
39. 39.3.6 × 2.1 — where does the decimal point go? (a) 0.0756 (b) 75.6 (c) 0.756 (d) 7.56
40. 40.0.55 × 0.3 — where does the decimal point go? (a) 0.00165 (b) 0.165 (c) 1.65 (d) 0.0165

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