Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 225 · 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. 1.0.87 × 16 — where does the decimal point go? (a) 1.392 (b) 13.92 (c) 139.2 (d) 0.1392
2. 2.0.65 × 5 — where does the decimal point go? (a) 3.25 (b) 0.325 (c) 0.0325 (d) 32.5
3. 3.6.7 × 13 — where does the decimal point go? (a) 871 (b) 0.871 (c) 8.71 (d) 87.1
4. 4.9.3 × 35 — where does the decimal point go? (a) 325.5 (b) 32.55 (c) 3.255 (d) 3255
5. 5.0.13 × 3 — where does the decimal point go? (a) 0.39 (b) 0.039 (c) 0.0039 (d) 3.9
6. 6.3.4 × 0.2 — where does the decimal point go? (a) 0.68 (b) 0.068 (c) 0.0068 (d) 6.8
7. 7.9.8 × 0.3 — where does the decimal point go? (a) 29.4 (b) 0.0294 (c) 0.294 (d) 2.94
8. 8.3.1 × 15 — where does the decimal point go? (a) 46.5 (b) 465 (c) 4.65 (d) 0.465
9. 9.0.26 × 38 — where does the decimal point go? (a) 0.988 (b) 98.8 (c) 9.88 (d) 0.0988
10. 10.0.57 × 28 — where does the decimal point go? (a) 0.1596 (b) 159.6 (c) 15.96 (d) 1.596
11. 11.0.47 × 1.7 — where does the decimal point go? (a) 0.00799 (b) 0.799 (c) 7.99 (d) 0.0799
12. 12.0.47 × 0.6 — where does the decimal point go? (a) 0.282 (b) 0.0282 (c) 0.00282 (d) 2.82
13. 13.3.1 × 6 — where does the decimal point go? (a) 18.6 (b) 1.86 (c) 186 (d) 0.186
14. 14.9.1 × 4.1 — where does the decimal point go? (a) 37.31 (b) 373.1 (c) 3.731 (d) 0.3731
15. 15.7.1 × 9 — where does the decimal point go? (a) 63.9 (b) 639 (c) 0.639 (d) 6.39
16. 16.0.99 × 3.4 — where does the decimal point go? (a) 0.3366 (b) 33.66 (c) 0.03366 (d) 3.366
17. 17.1.9 × 0.8 — where does the decimal point go? (a) 0.0152 (b) 15.2 (c) 0.152 (d) 1.52
18. 18.0.57 × 18 — where does the decimal point go? (a) 0.1026 (b) 10.26 (c) 102.6 (d) 1.026
19. 19.0.76 × 19 — where does the decimal point go? (a) 1.444 (b) 0.1444 (c) 14.44 (d) 144.4
20. 20.8.9 × 0.9 — where does the decimal point go? (a) 0.801 (b) 0.0801 (c) 80.1 (d) 8.01
21. 21.7.3 × 2 — where does the decimal point go? (a) 0.146 (b) 1.46 (c) 14.6 (d) 146
22. 22.0.14 × 0.6 — where does the decimal point go? (a) 0.084 (b) 0.0084 (c) 0.84 (d) 0.00084
23. 23.0.22 × 27 — where does the decimal point go? (a) 5.94 (b) 0.0594 (c) 59.4 (d) 0.594
24. 24.0.29 × 33 — where does the decimal point go? (a) 0.0957 (b) 9.57 (c) 95.7 (d) 0.957
25. 25.0.27 × 0.3 — where does the decimal point go? (a) 0.81 (b) 0.0081 (c) 0.081 (d) 0.00081
26. 26.0.58 × 4 — where does the decimal point go? (a) 0.0232 (b) 0.232 (c) 23.2 (d) 2.32
27. 27.0.44 × 14 — where does the decimal point go? (a) 0.0616 (b) 0.616 (c) 6.16 (d) 61.6
28. 28.0.62 × 13 — where does the decimal point go? (a) 8.06 (b) 80.6 (c) 0.0806 (d) 0.806
29. 29.6.4 × 4 — where does the decimal point go? (a) 256 (b) 0.256 (c) 2.56 (d) 25.6
30. 30.0.26 × 2 — where does the decimal point go? (a) 0.52 (b) 0.052 (c) 5.2 (d) 0.0052
31. 31.0.18 × 8 — where does the decimal point go? (a) 0.144 (b) 14.4 (c) 0.0144 (d) 1.44
32. 32.6.4 × 1.1 — where does the decimal point go? (a) 0.0704 (b) 70.4 (c) 0.704 (d) 7.04
33. 33.6.3 × 4.9 — where does the decimal point go? (a) 30.87 (b) 3.087 (c) 0.3087 (d) 308.7
34. 34.1.7 × 0.4 — where does the decimal point go? (a) 0.068 (b) 6.8 (c) 0.68 (d) 0.0068
35. 35.2.1 × 4 — where does the decimal point go? (a) 0.84 (b) 0.084 (c) 8.4 (d) 84
36. 36.5.8 × 1.4 — where does the decimal point go? (a) 0.0812 (b) 81.2 (c) 8.12 (d) 0.812
37. 37.0.16 × 3 — where does the decimal point go? (a) 0.048 (b) 4.8 (c) 0.0048 (d) 0.48
38. 38.2.2 × 0.7 — where does the decimal point go? (a) 0.154 (b) 0.0154 (c) 1.54 (d) 15.4
39. 39.0.23 × 9 — where does the decimal point go? (a) 0.0207 (b) 0.207 (c) 2.07 (d) 20.7
40. 40.0.22 × 31 — where does the decimal point go? (a) 0.682 (b) 0.0682 (c) 6.82 (d) 68.2

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