Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 385 · 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. 1.6.8 × 1.2 — where does the decimal point go? (a) 81.6 (b) 8.16 (c) 0.816 (d) 0.0816
2. 2.2.2 × 0.4 — where does the decimal point go? (a) 0.88 (b) 0.088 (c) 0.0088 (d) 8.8
3. 3.1.4 × 4 — where does the decimal point go? (a) 0.056 (b) 56 (c) 0.56 (d) 5.6
4. 4.3.6 × 0.7 — where does the decimal point go? (a) 25.2 (b) 0.252 (c) 2.52 (d) 0.0252
5. 5.5.7 × 0.4 — where does the decimal point go? (a) 2.28 (b) 0.228 (c) 22.8 (d) 0.0228
6. 6.4.8 × 0.4 — where does the decimal point go? (a) 19.2 (b) 0.0192 (c) 1.92 (d) 0.192
7. 7.3.2 × 6 — where does the decimal point go? (a) 1.92 (b) 0.192 (c) 19.2 (d) 192
8. 8.6.9 × 7 — where does the decimal point go? (a) 48.3 (b) 0.483 (c) 4.83 (d) 483
9. 9.0.33 × 9 — where does the decimal point go? (a) 29.7 (b) 2.97 (c) 0.297 (d) 0.0297
10. 10.9.2 × 3.9 — where does the decimal point go? (a) 3.588 (b) 35.88 (c) 0.3588 (d) 358.8
11. 11.2.3 × 7 — where does the decimal point go? (a) 16.1 (b) 0.161 (c) 1.61 (d) 161
12. 12.0.72 × 1.1 — where does the decimal point go? (a) 7.92 (b) 0.0792 (c) 0.792 (d) 0.00792
13. 13.0.22 × 0.9 — where does the decimal point go? (a) 0.198 (b) 0.0198 (c) 1.98 (d) 0.00198
14. 14.8.5 × 21 — where does the decimal point go? (a) 178.5 (b) 1.785 (c) 17.85 (d) 1785
15. 15.0.35 × 0.3 — where does the decimal point go? (a) 0.00105 (b) 1.05 (c) 0.105 (d) 0.0105
16. 16.0.38 × 0.4 — where does the decimal point go? (a) 0.0152 (b) 0.152 (c) 1.52 (d) 0.00152
17. 17.1.3 × 31 — where does the decimal point go? (a) 403 (b) 4.03 (c) 40.3 (d) 0.403
18. 18.8.8 × 0.9 — where does the decimal point go? (a) 79.2 (b) 0.0792 (c) 0.792 (d) 7.92
19. 19.8.9 × 4 — where does the decimal point go? (a) 35.6 (b) 0.356 (c) 356 (d) 3.56
20. 20.0.35 × 4.3 — where does the decimal point go? (a) 0.1505 (b) 15.05 (c) 1.505 (d) 0.01505
21. 21.3.6 × 9 — where does the decimal point go? (a) 3.24 (b) 0.324 (c) 324 (d) 32.4
22. 22.0.29 × 6 — where does the decimal point go? (a) 0.174 (b) 1.74 (c) 0.0174 (d) 17.4
23. 23.0.91 × 4.4 — where does the decimal point go? (a) 0.04004 (b) 4.004 (c) 40.04 (d) 0.4004
24. 24.5.7 × 0.2 — where does the decimal point go? (a) 1.14 (b) 0.114 (c) 0.0114 (d) 11.4
25. 25.8.8 × 3 — where does the decimal point go? (a) 0.264 (b) 264 (c) 2.64 (d) 26.4
26. 26.5.7 × 0.6 — where does the decimal point go? (a) 0.0342 (b) 0.342 (c) 34.2 (d) 3.42
27. 27.0.14 × 0.3 — where does the decimal point go? (a) 0.042 (b) 0.0042 (c) 0.42 (d) 0.00042
28. 28.3.8 × 0.4 — where does the decimal point go? (a) 0.152 (b) 0.0152 (c) 1.52 (d) 15.2
29. 29.7.6 × 48 — where does the decimal point go? (a) 36.48 (b) 364.8 (c) 3.648 (d) 3648
30. 30.0.98 × 0.6 — where does the decimal point go? (a) 5.88 (b) 0.0588 (c) 0.588 (d) 0.00588
31. 31.1.5 × 1.5 — where does the decimal point go? (a) 2.25 (b) 0.0225 (c) 22.5 (d) 0.225
32. 32.0.54 × 14 — where does the decimal point go? (a) 7.56 (b) 0.756 (c) 75.6 (d) 0.0756
33. 33.0.13 × 5 — where does the decimal point go? (a) 0.065 (b) 0.0065 (c) 6.5 (d) 0.65
34. 34.9.4 × 3.4 — where does the decimal point go? (a) 31.96 (b) 0.3196 (c) 319.6 (d) 3.196
35. 35.6.3 × 4.3 — where does the decimal point go? (a) 2.709 (b) 270.9 (c) 27.09 (d) 0.2709
36. 36.0.41 × 6 — where does the decimal point go? (a) 0.0246 (b) 24.6 (c) 0.246 (d) 2.46
37. 37.0.18 × 7 — where does the decimal point go? (a) 0.0126 (b) 12.6 (c) 1.26 (d) 0.126
38. 38.0.77 × 21 — where does the decimal point go? (a) 0.1617 (b) 16.17 (c) 161.7 (d) 1.617
39. 39.0.34 × 2.8 — where does the decimal point go? (a) 0.00952 (b) 0.0952 (c) 0.952 (d) 9.52
40. 40.0.32 × 0.9 — where does the decimal point go? (a) 0.00288 (b) 0.0288 (c) 2.88 (d) 0.288

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