Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 137 · 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. 1.0.81 × 3.1 — where does the decimal point go? (a) 25.11 (b) 0.02511 (c) 2.511 (d) 0.2511
2. 2.0.28 × 0.7 — where does the decimal point go? (a) 0.196 (b) 1.96 (c) 0.00196 (d) 0.0196
3. 3.5.5 × 9 — where does the decimal point go? (a) 495 (b) 0.495 (c) 4.95 (d) 49.5
4. 4.6.6 × 47 — where does the decimal point go? (a) 3.102 (b) 310.2 (c) 31.02 (d) 3102
5. 5.0.25 × 37 — where does the decimal point go? (a) 9.25 (b) 92.5 (c) 0.0925 (d) 0.925
6. 6.1.2 × 0.3 — where does the decimal point go? (a) 0.036 (b) 0.0036 (c) 3.6 (d) 0.36
7. 7.7.8 × 0.4 — where does the decimal point go? (a) 0.0312 (b) 0.312 (c) 3.12 (d) 31.2
8. 8.0.71 × 0.7 — where does the decimal point go? (a) 0.00497 (b) 4.97 (c) 0.0497 (d) 0.497
9. 9.0.18 × 18 — where does the decimal point go? (a) 0.0324 (b) 32.4 (c) 3.24 (d) 0.324
10. 10.0.28 × 1.3 — where does the decimal point go? (a) 0.0364 (b) 0.00364 (c) 0.364 (d) 3.64
11. 11.0.21 × 31 — where does the decimal point go? (a) 6.51 (b) 0.0651 (c) 0.651 (d) 65.1
12. 12.0.69 × 6 — where does the decimal point go? (a) 0.0414 (b) 4.14 (c) 0.414 (d) 41.4
13. 13.2.9 × 4 — where does the decimal point go? (a) 1.16 (b) 116 (c) 11.6 (d) 0.116
14. 14.0.51 × 0.5 — where does the decimal point go? (a) 2.55 (b) 0.255 (c) 0.00255 (d) 0.0255
15. 15.2.4 × 2 — where does the decimal point go? (a) 48 (b) 4.8 (c) 0.048 (d) 0.48
16. 16.8.3 × 35 — where does the decimal point go? (a) 2905 (b) 2.905 (c) 290.5 (d) 29.05
17. 17.0.29 × 0.2 — where does the decimal point go? (a) 0.0058 (b) 0.00058 (c) 0.058 (d) 0.58
18. 18.8.1 × 0.4 — where does the decimal point go? (a) 0.324 (b) 32.4 (c) 0.0324 (d) 3.24
19. 19.4.2 × 47 — where does the decimal point go? (a) 1974 (b) 19.74 (c) 1.974 (d) 197.4
20. 20.0.13 × 4 — where does the decimal point go? (a) 5.2 (b) 0.052 (c) 0.52 (d) 0.0052
21. 21.5.9 × 43 — where does the decimal point go? (a) 253.7 (b) 2.537 (c) 25.37 (d) 2537
22. 22.2.2 × 18 — where does the decimal point go? (a) 396 (b) 3.96 (c) 39.6 (d) 0.396
23. 23.5.9 × 4.6 — where does the decimal point go? (a) 2.714 (b) 27.14 (c) 271.4 (d) 0.2714
24. 24.0.83 × 41 — where does the decimal point go? (a) 0.3403 (b) 34.03 (c) 3.403 (d) 340.3
25. 25.0.88 × 0.6 — where does the decimal point go? (a) 0.0528 (b) 0.00528 (c) 0.528 (d) 5.28
26. 26.0.35 × 5 — where does the decimal point go? (a) 0.0175 (b) 17.5 (c) 0.175 (d) 1.75
27. 27.0.63 × 8 — where does the decimal point go? (a) 50.4 (b) 0.504 (c) 0.0504 (d) 5.04
28. 28.0.49 × 0.7 — where does the decimal point go? (a) 3.43 (b) 0.0343 (c) 0.00343 (d) 0.343
29. 29.0.41 × 2.2 — where does the decimal point go? (a) 9.02 (b) 0.00902 (c) 0.0902 (d) 0.902
30. 30.4.4 × 9 — where does the decimal point go? (a) 0.396 (b) 39.6 (c) 396 (d) 3.96
31. 31.0.13 × 0.7 — where does the decimal point go? (a) 0.091 (b) 0.00091 (c) 0.0091 (d) 0.91
32. 32.5.5 × 3 — where does the decimal point go? (a) 0.165 (b) 1.65 (c) 16.5 (d) 165
33. 33.6.1 × 2 — where does the decimal point go? (a) 0.122 (b) 122 (c) 12.2 (d) 1.22
34. 34.0.37 × 0.6 — where does the decimal point go? (a) 2.22 (b) 0.222 (c) 0.0222 (d) 0.00222
35. 35.7.2 × 2 — where does the decimal point go? (a) 14.4 (b) 144 (c) 1.44 (d) 0.144
36. 36.7.6 × 39 — where does the decimal point go? (a) 2.964 (b) 29.64 (c) 2964 (d) 296.4
37. 37.0.23 × 4.8 — where does the decimal point go? (a) 1.104 (b) 11.04 (c) 0.1104 (d) 0.01104
38. 38.1.2 × 0.2 — where does the decimal point go? (a) 0.024 (b) 0.0024 (c) 0.24 (d) 2.4
39. 39.0.21 × 7 — where does the decimal point go? (a) 0.147 (b) 1.47 (c) 0.0147 (d) 14.7
40. 40.0.45 × 35 — where does the decimal point go? (a) 0.1575 (b) 1.575 (c) 15.75 (d) 157.5

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