Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 55 · 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. 1.0.15 × 0.7 — where does the decimal point go? (a) 0.105 (b) 0.00105 (c) 0.0105 (d) 1.05
2. 2.3.4 × 6 — where does the decimal point go? (a) 2.04 (b) 0.204 (c) 20.4 (d) 204
3. 3.0.18 × 48 — where does the decimal point go? (a) 8.64 (b) 0.864 (c) 86.4 (d) 0.0864
4. 4.0.78 × 0.4 — where does the decimal point go? (a) 0.0312 (b) 0.312 (c) 3.12 (d) 0.00312
5. 5.2.1 × 3 — where does the decimal point go? (a) 63 (b) 0.63 (c) 0.063 (d) 6.3
6. 6.5.1 × 15 — where does the decimal point go? (a) 7.65 (b) 765 (c) 0.765 (d) 76.5
7. 7.0.22 × 2 — where does the decimal point go? (a) 0.044 (b) 0.0044 (c) 4.4 (d) 0.44
8. 8.9.2 × 0.8 — where does the decimal point go? (a) 73.6 (b) 0.0736 (c) 7.36 (d) 0.736
9. 9.5.6 × 7 — where does the decimal point go? (a) 3.92 (b) 0.392 (c) 392 (d) 39.2
10. 10.0.86 × 0.4 — where does the decimal point go? (a) 0.0344 (b) 3.44 (c) 0.00344 (d) 0.344
11. 11.0.72 × 3 — where does the decimal point go? (a) 0.216 (b) 21.6 (c) 2.16 (d) 0.0216
12. 12.3.7 × 0.6 — where does the decimal point go? (a) 0.0222 (b) 22.2 (c) 0.222 (d) 2.22
13. 13.5.9 × 1.2 — where does the decimal point go? (a) 7.08 (b) 70.8 (c) 0.708 (d) 0.0708
14. 14.3.4 × 41 — where does the decimal point go? (a) 13.94 (b) 1394 (c) 1.394 (d) 139.4
15. 15.0.71 × 2.2 — where does the decimal point go? (a) 1.562 (b) 0.1562 (c) 15.62 (d) 0.01562
16. 16.5.3 × 8 — where does the decimal point go? (a) 0.424 (b) 4.24 (c) 424 (d) 42.4
17. 17.0.43 × 0.5 — where does the decimal point go? (a) 0.215 (b) 0.0215 (c) 0.00215 (d) 2.15
18. 18.8.6 × 2 — where does the decimal point go? (a) 17.2 (b) 172 (c) 0.172 (d) 1.72
19. 19.8.7 × 4 — where does the decimal point go? (a) 348 (b) 0.348 (c) 34.8 (d) 3.48
20. 20.0.73 × 3 — where does the decimal point go? (a) 0.0219 (b) 21.9 (c) 0.219 (d) 2.19
21. 21.5.6 × 38 — where does the decimal point go? (a) 212.8 (b) 21.28 (c) 2.128 (d) 2128
22. 22.6.4 × 0.2 — where does the decimal point go? (a) 0.128 (b) 0.0128 (c) 1.28 (d) 12.8
23. 23.0.84 × 2 — where does the decimal point go? (a) 1.68 (b) 0.0168 (c) 0.168 (d) 16.8
24. 24.2.1 × 4.6 — where does the decimal point go? (a) 0.0966 (b) 9.66 (c) 96.6 (d) 0.966
25. 25.0.62 × 2.2 — where does the decimal point go? (a) 13.64 (b) 1.364 (c) 0.1364 (d) 0.01364
26. 26.0.33 × 47 — where does the decimal point go? (a) 155.1 (b) 0.1551 (c) 15.51 (d) 1.551
27. 27.0.37 × 1.7 — where does the decimal point go? (a) 6.29 (b) 0.629 (c) 0.00629 (d) 0.0629
28. 28.0.24 × 9 — where does the decimal point go? (a) 0.0216 (b) 0.216 (c) 21.6 (d) 2.16
29. 29.0.96 × 0.3 — where does the decimal point go? (a) 0.0288 (b) 2.88 (c) 0.288 (d) 0.00288
30. 30.0.94 × 1.8 — where does the decimal point go? (a) 1.692 (b) 0.01692 (c) 16.92 (d) 0.1692
31. 31.0.86 × 4 — where does the decimal point go? (a) 3.44 (b) 0.344 (c) 34.4 (d) 0.0344
32. 32.0.48 × 0.7 — where does the decimal point go? (a) 0.336 (b) 3.36 (c) 0.00336 (d) 0.0336
33. 33.3.3 × 0.4 — where does the decimal point go? (a) 1.32 (b) 0.0132 (c) 0.132 (d) 13.2
34. 34.5.9 × 22 — where does the decimal point go? (a) 12.98 (b) 1298 (c) 129.8 (d) 1.298
35. 35.4.6 × 6 — where does the decimal point go? (a) 0.276 (b) 27.6 (c) 276 (d) 2.76
36. 36.2.9 × 0.4 — where does the decimal point go? (a) 1.16 (b) 0.0116 (c) 11.6 (d) 0.116
37. 37.0.17 × 0.6 — where does the decimal point go? (a) 0.102 (b) 0.0102 (c) 1.02 (d) 0.00102
38. 38.1.9 × 23 — where does the decimal point go? (a) 437 (b) 43.7 (c) 4.37 (d) 0.437
39. 39.0.89 × 4 — where does the decimal point go? (a) 3.56 (b) 0.0356 (c) 0.356 (d) 35.6
40. 40.0.16 × 6 — where does the decimal point go? (a) 9.6 (b) 0.0096 (c) 0.96 (d) 0.096

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