Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 896 · 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. 1.0.38 × 19 — where does the decimal point go? (a) 0.722 (b) 0.0722 (c) 7.22 (d) 72.2
2. 2.0.97 × 17 — where does the decimal point go? (a) 1.649 (b) 0.1649 (c) 164.9 (d) 16.49
3. 3.0.98 × 18 — where does the decimal point go? (a) 1.764 (b) 0.1764 (c) 17.64 (d) 176.4
4. 4.3.2 × 0.6 — where does the decimal point go? (a) 19.2 (b) 0.192 (c) 1.92 (d) 0.0192
5. 5.2.6 × 0.6 — where does the decimal point go? (a) 0.0156 (b) 0.156 (c) 1.56 (d) 15.6
6. 6.7.3 × 7 — where does the decimal point go? (a) 511 (b) 5.11 (c) 0.511 (d) 51.1
7. 7.0.14 × 27 — where does the decimal point go? (a) 37.8 (b) 0.378 (c) 3.78 (d) 0.0378
8. 8.4.4 × 33 — where does the decimal point go? (a) 1.452 (b) 14.52 (c) 145.2 (d) 1452
9. 9.0.79 × 4 — where does the decimal point go? (a) 0.316 (b) 31.6 (c) 0.0316 (d) 3.16
10. 10.0.53 × 1.4 — where does the decimal point go? (a) 0.742 (b) 0.00742 (c) 0.0742 (d) 7.42
11. 11.9.2 × 4 — where does the decimal point go? (a) 3.68 (b) 0.368 (c) 368 (d) 36.8
12. 12.3.6 × 7 — where does the decimal point go? (a) 252 (b) 25.2 (c) 0.252 (d) 2.52
13. 13.0.99 × 26 — where does the decimal point go? (a) 257.4 (b) 2.574 (c) 25.74 (d) 0.2574
14. 14.0.77 × 7 — where does the decimal point go? (a) 0.539 (b) 53.9 (c) 5.39 (d) 0.0539
15. 15.8.4 × 0.3 — where does the decimal point go? (a) 0.0252 (b) 2.52 (c) 25.2 (d) 0.252
16. 16.0.31 × 42 — where does the decimal point go? (a) 130.2 (b) 13.02 (c) 0.1302 (d) 1.302
17. 17.0.48 × 4.6 — where does the decimal point go? (a) 22.08 (b) 0.2208 (c) 2.208 (d) 0.02208
18. 18.1.5 × 7 — where does the decimal point go? (a) 1.05 (b) 105 (c) 0.105 (d) 10.5
19. 19.0.12 × 0.2 — where does the decimal point go? (a) 0.024 (b) 0.0024 (c) 0.00024 (d) 0.24
20. 20.0.65 × 3 — where does the decimal point go? (a) 0.195 (b) 1.95 (c) 0.0195 (d) 19.5
21. 21.0.43 × 0.4 — where does the decimal point go? (a) 0.0172 (b) 0.00172 (c) 0.172 (d) 1.72
22. 22.0.33 × 49 — where does the decimal point go? (a) 1.617 (b) 161.7 (c) 0.1617 (d) 16.17
23. 23.3.5 × 1.5 — where does the decimal point go? (a) 0.525 (b) 5.25 (c) 52.5 (d) 0.0525
24. 24.4.4 × 3.1 — where does the decimal point go? (a) 0.1364 (b) 136.4 (c) 13.64 (d) 1.364
25. 25.9.6 × 21 — where does the decimal point go? (a) 20.16 (b) 2016 (c) 201.6 (d) 2.016
26. 26.0.49 × 9 — where does the decimal point go? (a) 0.0441 (b) 0.441 (c) 4.41 (d) 44.1
27. 27.0.44 × 0.4 — where does the decimal point go? (a) 0.0176 (b) 1.76 (c) 0.176 (d) 0.00176
28. 28.9.2 × 41 — where does the decimal point go? (a) 377.2 (b) 3.772 (c) 3772 (d) 37.72
29. 29.9.1 × 0.9 — where does the decimal point go? (a) 81.9 (b) 0.819 (c) 0.0819 (d) 8.19
30. 30.7.6 × 0.2 — where does the decimal point go? (a) 0.152 (b) 15.2 (c) 1.52 (d) 0.0152
31. 31.0.41 × 48 — where does the decimal point go? (a) 0.1968 (b) 196.8 (c) 1.968 (d) 19.68
32. 32.0.18 × 48 — where does the decimal point go? (a) 0.0864 (b) 8.64 (c) 0.864 (d) 86.4
33. 33.9.9 × 1.3 — where does the decimal point go? (a) 128.7 (b) 12.87 (c) 0.1287 (d) 1.287
34. 34.5.8 × 42 — where does the decimal point go? (a) 24.36 (b) 243.6 (c) 2.436 (d) 2436
35. 35.4.4 × 3 — where does the decimal point go? (a) 1.32 (b) 13.2 (c) 0.132 (d) 132
36. 36.0.21 × 4 — where does the decimal point go? (a) 0.84 (b) 8.4 (c) 0.0084 (d) 0.084
37. 37.0.18 × 3.2 — where does the decimal point go? (a) 0.0576 (b) 5.76 (c) 0.576 (d) 0.00576
38. 38.3.8 × 0.7 — where does the decimal point go? (a) 26.6 (b) 2.66 (c) 0.266 (d) 0.0266
39. 39.1.6 × 0.8 — where does the decimal point go? (a) 0.128 (b) 1.28 (c) 0.0128 (d) 12.8
40. 40.0.59 × 44 — where does the decimal point go? (a) 25.96 (b) 259.6 (c) 0.2596 (d) 2.596

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