Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 669 · 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. 1.0.19 × 35 — where does the decimal point go? (a) 0.0665 (b) 66.5 (c) 0.665 (d) 6.65
2. 2.7.8 × 0.2 — where does the decimal point go? (a) 15.6 (b) 0.156 (c) 1.56 (d) 0.0156
3. 3.7.4 × 11 — where does the decimal point go? (a) 8.14 (b) 0.814 (c) 814 (d) 81.4
4. 4.7.1 × 31 — where does the decimal point go? (a) 2201 (b) 2.201 (c) 220.1 (d) 22.01
5. 5.0.22 × 9 — where does the decimal point go? (a) 19.8 (b) 1.98 (c) 0.198 (d) 0.0198
6. 6.8.1 × 8 — where does the decimal point go? (a) 0.648 (b) 648 (c) 64.8 (d) 6.48
7. 7.0.81 × 3.7 — where does the decimal point go? (a) 2.997 (b) 29.97 (c) 0.02997 (d) 0.2997
8. 8.0.68 × 0.8 — where does the decimal point go? (a) 0.544 (b) 5.44 (c) 0.00544 (d) 0.0544
9. 9.1.6 × 8 — where does the decimal point go? (a) 128 (b) 1.28 (c) 12.8 (d) 0.128
10. 10.9.3 × 0.6 — where does the decimal point go? (a) 55.8 (b) 5.58 (c) 0.558 (d) 0.0558
11. 11.2.4 × 41 — where does the decimal point go? (a) 9.84 (b) 984 (c) 0.984 (d) 98.4
12. 12.0.22 × 0.2 — where does the decimal point go? (a) 0.44 (b) 0.0044 (c) 0.00044 (d) 0.044
13. 13.2.3 × 2.5 — where does the decimal point go? (a) 0.0575 (b) 57.5 (c) 0.575 (d) 5.75
14. 14.0.12 × 41 — where does the decimal point go? (a) 49.2 (b) 0.0492 (c) 0.492 (d) 4.92
15. 15.8.8 × 7 — where does the decimal point go? (a) 6.16 (b) 0.616 (c) 61.6 (d) 616
16. 16.0.25 × 0.3 — where does the decimal point go? (a) 0.75 (b) 0.075 (c) 0.0075 (d) 0.00075
17. 17.4.9 × 0.3 — where does the decimal point go? (a) 0.0147 (b) 0.147 (c) 1.47 (d) 14.7
18. 18.8.6 × 3 — where does the decimal point go? (a) 258 (b) 2.58 (c) 0.258 (d) 25.8
19. 19.2.7 × 0.4 — where does the decimal point go? (a) 10.8 (b) 0.0108 (c) 0.108 (d) 1.08
20. 20.8.9 × 46 — where does the decimal point go? (a) 40.94 (b) 4.094 (c) 409.4 (d) 4094
21. 21.0.93 × 4 — where does the decimal point go? (a) 0.0372 (b) 3.72 (c) 37.2 (d) 0.372
22. 22.5.7 × 3.8 — where does the decimal point go? (a) 2.166 (b) 0.2166 (c) 21.66 (d) 216.6
23. 23.7.3 × 8 — where does the decimal point go? (a) 584 (b) 0.584 (c) 58.4 (d) 5.84
24. 24.0.63 × 3 — where does the decimal point go? (a) 18.9 (b) 0.189 (c) 1.89 (d) 0.0189
25. 25.0.89 × 1.8 — where does the decimal point go? (a) 0.1602 (b) 0.01602 (c) 1.602 (d) 16.02
26. 26.9.8 × 1.9 — where does the decimal point go? (a) 1.862 (b) 0.1862 (c) 18.62 (d) 186.2
27. 27.0.39 × 0.2 — where does the decimal point go? (a) 0.078 (b) 0.00078 (c) 0.0078 (d) 0.78
28. 28.0.46 × 0.4 — where does the decimal point go? (a) 0.0184 (b) 0.00184 (c) 1.84 (d) 0.184
29. 29.5.2 × 18 — where does the decimal point go? (a) 93.6 (b) 0.936 (c) 9.36 (d) 936
30. 30.6.1 × 8 — where does the decimal point go? (a) 4.88 (b) 0.488 (c) 48.8 (d) 488
31. 31.8.2 × 4 — where does the decimal point go? (a) 328 (b) 32.8 (c) 3.28 (d) 0.328
32. 32.3.2 × 6 — where does the decimal point go? (a) 1.92 (b) 19.2 (c) 0.192 (d) 192
33. 33.0.19 × 0.2 — where does the decimal point go? (a) 0.00038 (b) 0.38 (c) 0.038 (d) 0.0038
34. 34.1.6 × 3.7 — where does the decimal point go? (a) 0.0592 (b) 0.592 (c) 59.2 (d) 5.92
35. 35.0.58 × 2.4 — where does the decimal point go? (a) 0.01392 (b) 0.1392 (c) 13.92 (d) 1.392
36. 36.9.1 × 0.4 — where does the decimal point go? (a) 0.0364 (b) 36.4 (c) 3.64 (d) 0.364
37. 37.0.57 × 22 — where does the decimal point go? (a) 125.4 (b) 1.254 (c) 0.1254 (d) 12.54
38. 38.8.6 × 4 — where does the decimal point go? (a) 3.44 (b) 344 (c) 34.4 (d) 0.344
39. 39.7.8 × 46 — where does the decimal point go? (a) 358.8 (b) 35.88 (c) 3.588 (d) 3588
40. 40.9.8 × 42 — where does the decimal point go? (a) 41.16 (b) 4.116 (c) 4116 (d) 411.6

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