Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 588 · 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. 1.0.89 × 17 — where does the decimal point go? (a) 0.1513 (b) 1.513 (c) 151.3 (d) 15.13
2. 2.7.8 × 9 — where does the decimal point go? (a) 70.2 (b) 7.02 (c) 702 (d) 0.702
3. 3.0.42 × 9 — where does the decimal point go? (a) 37.8 (b) 3.78 (c) 0.378 (d) 0.0378
4. 4.1.9 × 1.6 — where does the decimal point go? (a) 3.04 (b) 30.4 (c) 0.304 (d) 0.0304
5. 5.0.41 × 2.2 — where does the decimal point go? (a) 0.902 (b) 0.0902 (c) 9.02 (d) 0.00902
6. 6.0.84 × 38 — where does the decimal point go? (a) 319.2 (b) 3.192 (c) 0.3192 (d) 31.92
7. 7.0.93 × 36 — where does the decimal point go? (a) 0.3348 (b) 3.348 (c) 334.8 (d) 33.48
8. 8.0.52 × 23 — where does the decimal point go? (a) 1.196 (b) 0.1196 (c) 11.96 (d) 119.6
9. 9.0.64 × 22 — where does the decimal point go? (a) 14.08 (b) 1.408 (c) 0.1408 (d) 140.8
10. 10.6.6 × 0.3 — where does the decimal point go? (a) 1.98 (b) 0.0198 (c) 19.8 (d) 0.198
11. 11.0.84 × 46 — where does the decimal point go? (a) 0.3864 (b) 38.64 (c) 3.864 (d) 386.4
12. 12.0.57 × 0.8 — where does the decimal point go? (a) 0.456 (b) 4.56 (c) 0.00456 (d) 0.0456
13. 13.9.3 × 4 — where does the decimal point go? (a) 372 (b) 0.372 (c) 3.72 (d) 37.2
14. 14.0.63 × 8 — where does the decimal point go? (a) 0.0504 (b) 0.504 (c) 5.04 (d) 50.4
15. 15.0.42 × 0.2 — where does the decimal point go? (a) 0.084 (b) 0.0084 (c) 0.84 (d) 0.00084
16. 16.0.84 × 43 — where does the decimal point go? (a) 36.12 (b) 0.3612 (c) 3.612 (d) 361.2
17. 17.0.37 × 3 — where does the decimal point go? (a) 0.0111 (b) 0.111 (c) 1.11 (d) 11.1
18. 18.1.4 × 48 — where does the decimal point go? (a) 0.672 (b) 6.72 (c) 672 (d) 67.2
19. 19.6.6 × 31 — where does the decimal point go? (a) 204.6 (b) 2.046 (c) 20.46 (d) 2046
20. 20.8.8 × 0.4 — where does the decimal point go? (a) 35.2 (b) 0.0352 (c) 3.52 (d) 0.352
21. 21.7.7 × 42 — where does the decimal point go? (a) 3.234 (b) 323.4 (c) 32.34 (d) 3234
22. 22.7.4 × 9 — where does the decimal point go? (a) 6.66 (b) 0.666 (c) 666 (d) 66.6
23. 23.2.7 × 5 — where does the decimal point go? (a) 1.35 (b) 13.5 (c) 0.135 (d) 135
24. 24.4.8 × 1.3 — where does the decimal point go? (a) 6.24 (b) 0.624 (c) 0.0624 (d) 62.4
25. 25.3.3 × 3.7 — where does the decimal point go? (a) 12.21 (b) 122.1 (c) 0.1221 (d) 1.221
26. 26.0.71 × 3 — where does the decimal point go? (a) 0.213 (b) 0.0213 (c) 21.3 (d) 2.13
27. 27.0.21 × 8 — where does the decimal point go? (a) 0.0168 (b) 0.168 (c) 1.68 (d) 16.8
28. 28.0.16 × 2.3 — where does the decimal point go? (a) 0.0368 (b) 0.00368 (c) 3.68 (d) 0.368
29. 29.4.1 × 43 — where does the decimal point go? (a) 17.63 (b) 176.3 (c) 1.763 (d) 1763
30. 30.0.95 × 0.3 — where does the decimal point go? (a) 0.285 (b) 0.0285 (c) 2.85 (d) 0.00285
31. 31.6.1 × 0.2 — where does the decimal point go? (a) 0.122 (b) 1.22 (c) 12.2 (d) 0.0122
32. 32.7.6 × 4.2 — where does the decimal point go? (a) 0.3192 (b) 3.192 (c) 319.2 (d) 31.92
33. 33.0.71 × 17 — where does the decimal point go? (a) 0.1207 (b) 120.7 (c) 1.207 (d) 12.07
34. 34.4.1 × 7 — where does the decimal point go? (a) 287 (b) 0.287 (c) 2.87 (d) 28.7
35. 35.0.29 × 0.7 — where does the decimal point go? (a) 2.03 (b) 0.0203 (c) 0.203 (d) 0.00203
36. 36.9.8 × 3 — where does the decimal point go? (a) 294 (b) 2.94 (c) 0.294 (d) 29.4
37. 37.0.25 × 0.3 — where does the decimal point go? (a) 0.75 (b) 0.0075 (c) 0.00075 (d) 0.075
38. 38.0.67 × 3 — where does the decimal point go? (a) 20.1 (b) 0.0201 (c) 2.01 (d) 0.201
39. 39.5.8 × 0.9 — where does the decimal point go? (a) 5.22 (b) 0.0522 (c) 0.522 (d) 52.2
40. 40.5.6 × 1.8 — where does the decimal point go? (a) 1.008 (b) 100.8 (c) 10.08 (d) 0.1008

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