Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 496 · 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. 1.2.8 × 6 — where does the decimal point go? (a) 1.68 (b) 16.8 (c) 168 (d) 0.168
2. 2.4.8 × 8 — where does the decimal point go? (a) 0.384 (b) 3.84 (c) 38.4 (d) 384
3. 3.0.28 × 22 — where does the decimal point go? (a) 6.16 (b) 0.616 (c) 0.0616 (d) 61.6
4. 4.0.53 × 36 — where does the decimal point go? (a) 1.908 (b) 19.08 (c) 0.1908 (d) 190.8
5. 5.0.56 × 9 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 0.0504 (d) 0.504
6. 6.0.94 × 0.8 — where does the decimal point go? (a) 0.0752 (b) 0.00752 (c) 7.52 (d) 0.752
7. 7.0.19 × 3.9 — where does the decimal point go? (a) 0.741 (b) 7.41 (c) 0.0741 (d) 0.00741
8. 8.7.1 × 0.9 — where does the decimal point go? (a) 63.9 (b) 0.639 (c) 0.0639 (d) 6.39
9. 9.0.82 × 1.9 — where does the decimal point go? (a) 0.01558 (b) 15.58 (c) 1.558 (d) 0.1558
10. 10.5.6 × 1.9 — where does the decimal point go? (a) 106.4 (b) 10.64 (c) 0.1064 (d) 1.064
11. 11.6.1 × 4.8 — where does the decimal point go? (a) 0.2928 (b) 29.28 (c) 2.928 (d) 292.8
12. 12.5.2 × 0.9 — where does the decimal point go? (a) 0.0468 (b) 4.68 (c) 0.468 (d) 46.8
13. 13.0.93 × 4.6 — where does the decimal point go? (a) 0.4278 (b) 4.278 (c) 0.04278 (d) 42.78
14. 14.0.83 × 9 — where does the decimal point go? (a) 0.747 (b) 0.0747 (c) 7.47 (d) 74.7
15. 15.0.57 × 0.2 — where does the decimal point go? (a) 0.114 (b) 0.00114 (c) 0.0114 (d) 1.14
16. 16.0.17 × 0.4 — where does the decimal point go? (a) 0.068 (b) 0.0068 (c) 0.00068 (d) 0.68
17. 17.9.1 × 3.4 — where does the decimal point go? (a) 3.094 (b) 30.94 (c) 309.4 (d) 0.3094
18. 18.0.27 × 0.7 — where does the decimal point go? (a) 0.00189 (b) 0.0189 (c) 1.89 (d) 0.189
19. 19.0.68 × 0.6 — where does the decimal point go? (a) 0.408 (b) 0.0408 (c) 4.08 (d) 0.00408
20. 20.7.1 × 4 — where does the decimal point go? (a) 0.284 (b) 284 (c) 2.84 (d) 28.4
21. 21.0.22 × 6 — where does the decimal point go? (a) 13.2 (b) 0.132 (c) 0.0132 (d) 1.32
22. 22.9.9 × 0.8 — where does the decimal point go? (a) 0.792 (b) 7.92 (c) 0.0792 (d) 79.2
23. 23.5.7 × 3.3 — where does the decimal point go? (a) 1.881 (b) 188.1 (c) 18.81 (d) 0.1881
24. 24.0.88 × 6 — where does the decimal point go? (a) 0.528 (b) 0.0528 (c) 5.28 (d) 52.8
25. 25.9.1 × 0.3 — where does the decimal point go? (a) 27.3 (b) 2.73 (c) 0.0273 (d) 0.273
26. 26.8.1 × 27 — where does the decimal point go? (a) 21.87 (b) 2.187 (c) 2187 (d) 218.7
27. 27.0.96 × 3 — where does the decimal point go? (a) 2.88 (b) 0.288 (c) 0.0288 (d) 28.8
28. 28.0.57 × 0.8 — where does the decimal point go? (a) 4.56 (b) 0.00456 (c) 0.0456 (d) 0.456
29. 29.0.49 × 3.2 — where does the decimal point go? (a) 1.568 (b) 15.68 (c) 0.1568 (d) 0.01568
30. 30.6.8 × 3 — where does the decimal point go? (a) 0.204 (b) 20.4 (c) 204 (d) 2.04
31. 31.7.3 × 2 — where does the decimal point go? (a) 0.146 (b) 14.6 (c) 146 (d) 1.46
32. 32.3.3 × 3 — where does the decimal point go? (a) 0.099 (b) 99 (c) 0.99 (d) 9.9
33. 33.0.17 × 19 — where does the decimal point go? (a) 3.23 (b) 0.0323 (c) 0.323 (d) 32.3
34. 34.3.6 × 47 — where does the decimal point go? (a) 169.2 (b) 1692 (c) 16.92 (d) 1.692
35. 35.6.6 × 47 — where does the decimal point go? (a) 31.02 (b) 3102 (c) 310.2 (d) 3.102
36. 36.5.5 × 4.9 — where does the decimal point go? (a) 269.5 (b) 2.695 (c) 26.95 (d) 0.2695
37. 37.0.62 × 29 — where does the decimal point go? (a) 1.798 (b) 179.8 (c) 0.1798 (d) 17.98
38. 38.0.86 × 41 — where does the decimal point go? (a) 3.526 (b) 35.26 (c) 0.3526 (d) 352.6
39. 39.6.5 × 7 — where does the decimal point go? (a) 455 (b) 45.5 (c) 0.455 (d) 4.55
40. 40.0.32 × 1.3 — where does the decimal point go? (a) 0.0416 (b) 4.16 (c) 0.00416 (d) 0.416

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