Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 876 · 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. 1.4.8 × 3.6 — where does the decimal point go? (a) 1.728 (b) 0.1728 (c) 172.8 (d) 17.28
2. 2.3.9 × 6 — where does the decimal point go? (a) 0.234 (b) 23.4 (c) 2.34 (d) 234
3. 3.0.48 × 0.4 — where does the decimal point go? (a) 0.00192 (b) 0.0192 (c) 1.92 (d) 0.192
4. 4.0.22 × 1.1 — where does the decimal point go? (a) 2.42 (b) 0.0242 (c) 0.242 (d) 0.00242
5. 5.8.2 × 3 — where does the decimal point go? (a) 2.46 (b) 246 (c) 0.246 (d) 24.6
6. 6.5.7 × 6 — where does the decimal point go? (a) 3.42 (b) 34.2 (c) 0.342 (d) 342
7. 7.1.2 × 6 — where does the decimal point go? (a) 0.072 (b) 0.72 (c) 72 (d) 7.2
8. 8.7.4 × 0.3 — where does the decimal point go? (a) 0.222 (b) 0.0222 (c) 22.2 (d) 2.22
9. 9.1.8 × 16 — where does the decimal point go? (a) 28.8 (b) 2.88 (c) 0.288 (d) 288
10. 10.3.4 × 8 — where does the decimal point go? (a) 27.2 (b) 2.72 (c) 0.272 (d) 272
11. 11.3.1 × 2.4 — where does the decimal point go? (a) 0.0744 (b) 7.44 (c) 74.4 (d) 0.744
12. 12.8.8 × 3 — where does the decimal point go? (a) 2.64 (b) 0.264 (c) 26.4 (d) 264
13. 13.2.3 × 3 — where does the decimal point go? (a) 6.9 (b) 69 (c) 0.069 (d) 0.69
14. 14.2.2 × 0.8 — where does the decimal point go? (a) 0.0176 (b) 17.6 (c) 0.176 (d) 1.76
15. 15.2.9 × 0.5 — where does the decimal point go? (a) 0.0145 (b) 14.5 (c) 0.145 (d) 1.45
16. 16.6.3 × 28 — where does the decimal point go? (a) 1.764 (b) 17.64 (c) 1764 (d) 176.4
17. 17.3.4 × 3 — where does the decimal point go? (a) 10.2 (b) 1.02 (c) 0.102 (d) 102
18. 18.0.87 × 3 — where does the decimal point go? (a) 0.261 (b) 2.61 (c) 26.1 (d) 0.0261
19. 19.3.8 × 0.4 — where does the decimal point go? (a) 15.2 (b) 0.0152 (c) 1.52 (d) 0.152
20. 20.0.78 × 0.4 — where does the decimal point go? (a) 3.12 (b) 0.0312 (c) 0.312 (d) 0.00312
21. 21.0.81 × 4.9 — where does the decimal point go? (a) 0.3969 (b) 39.69 (c) 3.969 (d) 0.03969
22. 22.0.51 × 8 — where does the decimal point go? (a) 4.08 (b) 40.8 (c) 0.0408 (d) 0.408
23. 23.5.3 × 8 — where does the decimal point go? (a) 0.424 (b) 4.24 (c) 42.4 (d) 424
24. 24.0.96 × 4.6 — where does the decimal point go? (a) 0.4416 (b) 0.04416 (c) 4.416 (d) 44.16
25. 25.3.4 × 1.1 — where does the decimal point go? (a) 0.0374 (b) 3.74 (c) 0.374 (d) 37.4
26. 26.8.1 × 0.5 — where does the decimal point go? (a) 4.05 (b) 0.405 (c) 40.5 (d) 0.0405
27. 27.6.3 × 0.3 — where does the decimal point go? (a) 0.0189 (b) 1.89 (c) 18.9 (d) 0.189
28. 28.6.8 × 0.4 — where does the decimal point go? (a) 0.0272 (b) 2.72 (c) 27.2 (d) 0.272
29. 29.0.97 × 41 — where does the decimal point go? (a) 3.977 (b) 39.77 (c) 397.7 (d) 0.3977
30. 30.4.6 × 3.2 — where does the decimal point go? (a) 147.2 (b) 14.72 (c) 0.1472 (d) 1.472
31. 31.1.6 × 18 — where does the decimal point go? (a) 288 (b) 2.88 (c) 28.8 (d) 0.288
32. 32.3.2 × 0.6 — where does the decimal point go? (a) 0.0192 (b) 0.192 (c) 1.92 (d) 19.2
33. 33.0.94 × 32 — where does the decimal point go? (a) 3.008 (b) 0.3008 (c) 30.08 (d) 300.8
34. 34.0.63 × 39 — where does the decimal point go? (a) 24.57 (b) 2.457 (c) 245.7 (d) 0.2457
35. 35.2.3 × 0.9 — where does the decimal point go? (a) 0.0207 (b) 0.207 (c) 2.07 (d) 20.7
36. 36.7.3 × 26 — where does the decimal point go? (a) 18.98 (b) 1.898 (c) 1898 (d) 189.8
37. 37.4.9 × 2 — where does the decimal point go? (a) 0.098 (b) 9.8 (c) 98 (d) 0.98
38. 38.6.3 × 2.8 — where does the decimal point go? (a) 176.4 (b) 1.764 (c) 17.64 (d) 0.1764
39. 39.0.75 × 0.7 — where does the decimal point go? (a) 5.25 (b) 0.00525 (c) 0.0525 (d) 0.525
40. 40.0.31 × 13 — where does the decimal point go? (a) 4.03 (b) 0.403 (c) 0.0403 (d) 40.3

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