Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 487 · 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. 1.0.39 × 37 — where does the decimal point go? (a) 144.3 (b) 1.443 (c) 14.43 (d) 0.1443
2. 2.1.6 × 2.1 — where does the decimal point go? (a) 33.6 (b) 0.336 (c) 0.0336 (d) 3.36
3. 3.1.7 × 0.4 — where does the decimal point go? (a) 6.8 (b) 0.68 (c) 0.0068 (d) 0.068
4. 4.2.6 × 8 — where does the decimal point go? (a) 20.8 (b) 0.208 (c) 208 (d) 2.08
5. 5.0.33 × 1.4 — where does the decimal point go? (a) 0.0462 (b) 0.00462 (c) 0.462 (d) 4.62
6. 6.6.3 × 8 — where does the decimal point go? (a) 5.04 (b) 504 (c) 50.4 (d) 0.504
7. 7.0.26 × 0.8 — where does the decimal point go? (a) 2.08 (b) 0.0208 (c) 0.00208 (d) 0.208
8. 8.0.78 × 3.9 — where does the decimal point go? (a) 0.03042 (b) 3.042 (c) 0.3042 (d) 30.42
9. 9.0.16 × 2 — where does the decimal point go? (a) 0.032 (b) 0.0032 (c) 3.2 (d) 0.32
10. 10.0.14 × 16 — where does the decimal point go? (a) 0.0224 (b) 0.224 (c) 2.24 (d) 22.4
11. 11.4.9 × 0.6 — where does the decimal point go? (a) 0.294 (b) 29.4 (c) 2.94 (d) 0.0294
12. 12.3.7 × 23 — where does the decimal point go? (a) 0.851 (b) 85.1 (c) 851 (d) 8.51
13. 13.3.7 × 4.1 — where does the decimal point go? (a) 15.17 (b) 1.517 (c) 0.1517 (d) 151.7
14. 14.9.9 × 18 — where does the decimal point go? (a) 178.2 (b) 1782 (c) 17.82 (d) 1.782
15. 15.3.1 × 0.7 — where does the decimal point go? (a) 0.217 (b) 21.7 (c) 0.0217 (d) 2.17
16. 16.3.8 × 0.3 — where does the decimal point go? (a) 0.114 (b) 1.14 (c) 11.4 (d) 0.0114
17. 17.0.36 × 4 — where does the decimal point go? (a) 0.0144 (b) 1.44 (c) 0.144 (d) 14.4
18. 18.1.9 × 8 — where does the decimal point go? (a) 1.52 (b) 0.152 (c) 152 (d) 15.2
19. 19.0.93 × 2 — where does the decimal point go? (a) 0.186 (b) 1.86 (c) 0.0186 (d) 18.6
20. 20.0.83 × 0.8 — where does the decimal point go? (a) 0.0664 (b) 0.664 (c) 0.00664 (d) 6.64
21. 21.8.9 × 9 — where does the decimal point go? (a) 0.801 (b) 801 (c) 8.01 (d) 80.1
22. 22.4.7 × 3 — where does the decimal point go? (a) 1.41 (b) 0.141 (c) 14.1 (d) 141
23. 23.6.7 × 0.8 — where does the decimal point go? (a) 5.36 (b) 0.0536 (c) 0.536 (d) 53.6
24. 24.2.4 × 0.6 — where does the decimal point go? (a) 14.4 (b) 1.44 (c) 0.144 (d) 0.0144
25. 25.4.8 × 9 — where does the decimal point go? (a) 43.2 (b) 0.432 (c) 4.32 (d) 432
26. 26.0.53 × 3.7 — where does the decimal point go? (a) 0.1961 (b) 0.01961 (c) 19.61 (d) 1.961
27. 27.1.2 × 24 — where does the decimal point go? (a) 288 (b) 28.8 (c) 2.88 (d) 0.288
28. 28.0.14 × 4.1 — where does the decimal point go? (a) 0.0574 (b) 5.74 (c) 0.00574 (d) 0.574
29. 29.3.2 × 14 — where does the decimal point go? (a) 0.448 (b) 4.48 (c) 448 (d) 44.8
30. 30.5.1 × 0.4 — where does the decimal point go? (a) 20.4 (b) 0.0204 (c) 2.04 (d) 0.204
31. 31.0.36 × 49 — where does the decimal point go? (a) 17.64 (b) 176.4 (c) 1.764 (d) 0.1764
32. 32.0.12 × 48 — where does the decimal point go? (a) 0.576 (b) 57.6 (c) 0.0576 (d) 5.76
33. 33.3.2 × 19 — where does the decimal point go? (a) 60.8 (b) 0.608 (c) 6.08 (d) 608
34. 34.5.7 × 4.7 — where does the decimal point go? (a) 26.79 (b) 0.2679 (c) 2.679 (d) 267.9
35. 35.2.9 × 2.9 — where does the decimal point go? (a) 0.841 (b) 8.41 (c) 84.1 (d) 0.0841
36. 36.0.61 × 4.4 — where does the decimal point go? (a) 0.02684 (b) 2.684 (c) 0.2684 (d) 26.84
37. 37.2.9 × 0.4 — where does the decimal point go? (a) 0.0116 (b) 11.6 (c) 1.16 (d) 0.116
38. 38.0.16 × 0.3 — where does the decimal point go? (a) 0.048 (b) 0.0048 (c) 0.00048 (d) 0.48
39. 39.0.16 × 0.8 — where does the decimal point go? (a) 1.28 (b) 0.128 (c) 0.00128 (d) 0.0128
40. 40.0.56 × 4.7 — where does the decimal point go? (a) 0.02632 (b) 26.32 (c) 2.632 (d) 0.2632

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