Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 733 · 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. 1.0.72 × 9 — where does the decimal point go? (a) 0.0648 (b) 0.648 (c) 64.8 (d) 6.48
2. 2.8.3 × 0.7 — where does the decimal point go? (a) 5.81 (b) 0.581 (c) 58.1 (d) 0.0581
3. 3.0.18 × 3.1 — where does the decimal point go? (a) 0.00558 (b) 5.58 (c) 0.0558 (d) 0.558
4. 4.0.88 × 21 — where does the decimal point go? (a) 18.48 (b) 1.848 (c) 0.1848 (d) 184.8
5. 5.0.25 × 15 — where does the decimal point go? (a) 3.75 (b) 0.375 (c) 0.0375 (d) 37.5
6. 6.3.3 × 2.3 — where does the decimal point go? (a) 0.759 (b) 7.59 (c) 75.9 (d) 0.0759
7. 7.9.3 × 0.9 — where does the decimal point go? (a) 0.0837 (b) 83.7 (c) 8.37 (d) 0.837
8. 8.0.76 × 6 — where does the decimal point go? (a) 45.6 (b) 4.56 (c) 0.456 (d) 0.0456
9. 9.9.3 × 0.5 — where does the decimal point go? (a) 46.5 (b) 0.0465 (c) 0.465 (d) 4.65
10. 10.0.76 × 0.2 — where does the decimal point go? (a) 0.00152 (b) 1.52 (c) 0.0152 (d) 0.152
11. 11.6.2 × 48 — where does the decimal point go? (a) 29.76 (b) 297.6 (c) 2.976 (d) 2976
12. 12.0.55 × 0.9 — where does the decimal point go? (a) 0.495 (b) 0.0495 (c) 0.00495 (d) 4.95
13. 13.2.4 × 6 — where does the decimal point go? (a) 1.44 (b) 0.144 (c) 14.4 (d) 144
14. 14.9.6 × 1.9 — where does the decimal point go? (a) 0.1824 (b) 1.824 (c) 182.4 (d) 18.24
15. 15.0.64 × 0.8 — where does the decimal point go? (a) 0.00512 (b) 5.12 (c) 0.0512 (d) 0.512
16. 16.1.2 × 3.1 — where does the decimal point go? (a) 0.372 (b) 3.72 (c) 0.0372 (d) 37.2
17. 17.6.1 × 12 — where does the decimal point go? (a) 0.732 (b) 7.32 (c) 732 (d) 73.2
18. 18.0.65 × 4.7 — where does the decimal point go? (a) 3.055 (b) 30.55 (c) 0.3055 (d) 0.03055
19. 19.3.8 × 9 — where does the decimal point go? (a) 342 (b) 0.342 (c) 3.42 (d) 34.2
20. 20.0.91 × 4.9 — where does the decimal point go? (a) 0.4459 (b) 44.59 (c) 4.459 (d) 0.04459
21. 21.0.16 × 9 — where does the decimal point go? (a) 0.0144 (b) 0.144 (c) 14.4 (d) 1.44
22. 22.0.93 × 2 — where does the decimal point go? (a) 0.0186 (b) 18.6 (c) 1.86 (d) 0.186
23. 23.4.5 × 3.5 — where does the decimal point go? (a) 15.75 (b) 157.5 (c) 0.1575 (d) 1.575
24. 24.0.64 × 0.7 — where does the decimal point go? (a) 0.00448 (b) 4.48 (c) 0.448 (d) 0.0448
25. 25.1.2 × 0.7 — where does the decimal point go? (a) 0.084 (b) 8.4 (c) 0.84 (d) 0.0084
26. 26.8.7 × 6 — where does the decimal point go? (a) 52.2 (b) 0.522 (c) 5.22 (d) 522
27. 27.0.81 × 0.9 — where does the decimal point go? (a) 0.0729 (b) 0.729 (c) 7.29 (d) 0.00729
28. 28.2.4 × 9 — where does the decimal point go? (a) 21.6 (b) 2.16 (c) 0.216 (d) 216
29. 29.0.29 × 47 — where does the decimal point go? (a) 1.363 (b) 13.63 (c) 0.1363 (d) 136.3
30. 30.7.3 × 4.8 — where does the decimal point go? (a) 350.4 (b) 3.504 (c) 35.04 (d) 0.3504
31. 31.0.69 × 3 — where does the decimal point go? (a) 2.07 (b) 20.7 (c) 0.207 (d) 0.0207
32. 32.0.68 × 0.2 — where does the decimal point go? (a) 0.136 (b) 0.00136 (c) 0.0136 (d) 1.36
33. 33.5.2 × 3 — where does the decimal point go? (a) 15.6 (b) 0.156 (c) 156 (d) 1.56
34. 34.7.6 × 6 — where does the decimal point go? (a) 45.6 (b) 0.456 (c) 4.56 (d) 456
35. 35.5.3 × 12 — where does the decimal point go? (a) 0.636 (b) 63.6 (c) 636 (d) 6.36
36. 36.6.5 × 31 — where does the decimal point go? (a) 20.15 (b) 2.015 (c) 201.5 (d) 2015
37. 37.0.63 × 28 — where does the decimal point go? (a) 1.764 (b) 0.1764 (c) 176.4 (d) 17.64
38. 38.0.58 × 9 — where does the decimal point go? (a) 0.0522 (b) 52.2 (c) 5.22 (d) 0.522
39. 39.7.8 × 0.2 — where does the decimal point go? (a) 15.6 (b) 0.0156 (c) 0.156 (d) 1.56
40. 40.2.3 × 2 — where does the decimal point go? (a) 0.046 (b) 46 (c) 0.46 (d) 4.6

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