Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 944 · 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. 1.0.52 × 46 — where does the decimal point go? (a) 23.92 (b) 239.2 (c) 2.392 (d) 0.2392
2. 2.2.7 × 0.4 — where does the decimal point go? (a) 1.08 (b) 10.8 (c) 0.0108 (d) 0.108
3. 3.6.5 × 3.7 — where does the decimal point go? (a) 24.05 (b) 2.405 (c) 240.5 (d) 0.2405
4. 4.0.52 × 31 — where does the decimal point go? (a) 0.1612 (b) 16.12 (c) 1.612 (d) 161.2
5. 5.2.4 × 4.1 — where does the decimal point go? (a) 98.4 (b) 0.984 (c) 0.0984 (d) 9.84
6. 6.0.39 × 34 — where does the decimal point go? (a) 1.326 (b) 13.26 (c) 0.1326 (d) 132.6
7. 7.7.9 × 0.6 — where does the decimal point go? (a) 0.474 (b) 0.0474 (c) 47.4 (d) 4.74
8. 8.6.1 × 0.3 — where does the decimal point go? (a) 1.83 (b) 0.183 (c) 0.0183 (d) 18.3
9. 9.1.4 × 2.8 — where does the decimal point go? (a) 0.392 (b) 3.92 (c) 0.0392 (d) 39.2
10. 10.6.8 × 2 — where does the decimal point go? (a) 1.36 (b) 136 (c) 13.6 (d) 0.136
11. 11.8.9 × 1.5 — where does the decimal point go? (a) 0.1335 (b) 13.35 (c) 133.5 (d) 1.335
12. 12.2.6 × 36 — where does the decimal point go? (a) 93.6 (b) 0.936 (c) 9.36 (d) 936
13. 13.0.35 × 0.7 — where does the decimal point go? (a) 2.45 (b) 0.0245 (c) 0.245 (d) 0.00245
14. 14.0.41 × 16 — where does the decimal point go? (a) 0.656 (b) 65.6 (c) 6.56 (d) 0.0656
15. 15.3.3 × 0.3 — where does the decimal point go? (a) 0.99 (b) 0.099 (c) 9.9 (d) 0.0099
16. 16.2.3 × 1.5 — where does the decimal point go? (a) 0.345 (b) 0.0345 (c) 34.5 (d) 3.45
17. 17.4.2 × 0.2 — where does the decimal point go? (a) 0.84 (b) 0.084 (c) 8.4 (d) 0.0084
18. 18.1.8 × 1.7 — where does the decimal point go? (a) 0.0306 (b) 0.306 (c) 3.06 (d) 30.6
19. 19.0.81 × 7 — where does the decimal point go? (a) 56.7 (b) 0.567 (c) 5.67 (d) 0.0567
20. 20.8.1 × 22 — where does the decimal point go? (a) 17.82 (b) 178.2 (c) 1782 (d) 1.782
21. 21.0.26 × 44 — where does the decimal point go? (a) 0.1144 (b) 114.4 (c) 1.144 (d) 11.44
22. 22.9.6 × 0.6 — where does the decimal point go? (a) 0.576 (b) 0.0576 (c) 5.76 (d) 57.6
23. 23.9.2 × 23 — where does the decimal point go? (a) 21.16 (b) 211.6 (c) 2116 (d) 2.116
24. 24.0.43 × 8 — where does the decimal point go? (a) 34.4 (b) 0.344 (c) 0.0344 (d) 3.44
25. 25.3.4 × 2.4 — where does the decimal point go? (a) 81.6 (b) 0.0816 (c) 8.16 (d) 0.816
26. 26.0.18 × 28 — where does the decimal point go? (a) 50.4 (b) 0.0504 (c) 5.04 (d) 0.504
27. 27.9.2 × 2.2 — where does the decimal point go? (a) 0.2024 (b) 2.024 (c) 20.24 (d) 202.4
28. 28.0.67 × 28 — where does the decimal point go? (a) 18.76 (b) 187.6 (c) 1.876 (d) 0.1876
29. 29.6.1 × 0.8 — where does the decimal point go? (a) 48.8 (b) 4.88 (c) 0.488 (d) 0.0488
30. 30.8.4 × 1.9 — where does the decimal point go? (a) 1.596 (b) 159.6 (c) 0.1596 (d) 15.96
31. 31.1.4 × 6 — where does the decimal point go? (a) 8.4 (b) 0.084 (c) 0.84 (d) 84
32. 32.8.1 × 3.5 — where does the decimal point go? (a) 28.35 (b) 283.5 (c) 0.2835 (d) 2.835
33. 33.0.93 × 23 — where does the decimal point go? (a) 2.139 (b) 21.39 (c) 213.9 (d) 0.2139
34. 34.0.94 × 0.2 — where does the decimal point go? (a) 1.88 (b) 0.0188 (c) 0.188 (d) 0.00188
35. 35.5.2 × 1.1 — where does the decimal point go? (a) 0.572 (b) 5.72 (c) 0.0572 (d) 57.2
36. 36.4.7 × 34 — where does the decimal point go? (a) 1.598 (b) 159.8 (c) 15.98 (d) 1598
37. 37.5.2 × 21 — where does the decimal point go? (a) 109.2 (b) 10.92 (c) 1.092 (d) 1092
38. 38.0.96 × 0.2 — where does the decimal point go? (a) 0.192 (b) 0.0192 (c) 0.00192 (d) 1.92
39. 39.2.6 × 0.8 — where does the decimal point go? (a) 0.208 (b) 20.8 (c) 2.08 (d) 0.0208
40. 40.2.1 × 8 — where does the decimal point go? (a) 16.8 (b) 168 (c) 0.168 (d) 1.68

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