Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 73 · 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. 1.0.25 × 43 — where does the decimal point go? (a) 10.75 (b) 1.075 (c) 107.5 (d) 0.1075
2. 2.1.6 × 0.2 — where does the decimal point go? (a) 0.0032 (b) 0.32 (c) 3.2 (d) 0.032
3. 3.2.7 × 5 — where does the decimal point go? (a) 135 (b) 13.5 (c) 0.135 (d) 1.35
4. 4.0.99 × 3 — where does the decimal point go? (a) 2.97 (b) 0.0297 (c) 0.297 (d) 29.7
5. 5.7.3 × 7 — where does the decimal point go? (a) 51.1 (b) 5.11 (c) 0.511 (d) 511
6. 6.3.6 × 46 — where does the decimal point go? (a) 16.56 (b) 165.6 (c) 1656 (d) 1.656
7. 7.0.86 × 7 — where does the decimal point go? (a) 6.02 (b) 0.0602 (c) 60.2 (d) 0.602
8. 8.4.4 × 42 — where does the decimal point go? (a) 184.8 (b) 18.48 (c) 1.848 (d) 1848
9. 9.0.33 × 2.3 — where does the decimal point go? (a) 0.0759 (b) 0.00759 (c) 7.59 (d) 0.759
10. 10.0.33 × 4.9 — where does the decimal point go? (a) 0.1617 (b) 0.01617 (c) 1.617 (d) 16.17
11. 11.0.79 × 0.8 — where does the decimal point go? (a) 0.0632 (b) 0.00632 (c) 6.32 (d) 0.632
12. 12.0.14 × 31 — where does the decimal point go? (a) 0.0434 (b) 4.34 (c) 43.4 (d) 0.434
13. 13.2.3 × 0.4 — where does the decimal point go? (a) 0.92 (b) 0.0092 (c) 9.2 (d) 0.092
14. 14.0.94 × 4.2 — where does the decimal point go? (a) 3.948 (b) 39.48 (c) 0.03948 (d) 0.3948
15. 15.5.2 × 1.7 — where does the decimal point go? (a) 0.884 (b) 88.4 (c) 0.0884 (d) 8.84
16. 16.0.41 × 16 — where does the decimal point go? (a) 65.6 (b) 0.0656 (c) 6.56 (d) 0.656
17. 17.0.95 × 0.5 — where does the decimal point go? (a) 0.475 (b) 0.00475 (c) 0.0475 (d) 4.75
18. 18.6.1 × 3.7 — where does the decimal point go? (a) 22.57 (b) 2.257 (c) 0.2257 (d) 225.7
19. 19.1.5 × 7 — where does the decimal point go? (a) 1.05 (b) 105 (c) 0.105 (d) 10.5
20. 20.2.4 × 0.3 — where does the decimal point go? (a) 0.0072 (b) 0.072 (c) 0.72 (d) 7.2
21. 21.3.9 × 7 — where does the decimal point go? (a) 2.73 (b) 273 (c) 0.273 (d) 27.3
22. 22.6.3 × 14 — where does the decimal point go? (a) 88.2 (b) 8.82 (c) 882 (d) 0.882
23. 23.8.9 × 5 — where does the decimal point go? (a) 0.445 (b) 445 (c) 44.5 (d) 4.45
24. 24.5.3 × 3.3 — where does the decimal point go? (a) 17.49 (b) 0.1749 (c) 174.9 (d) 1.749
25. 25.0.77 × 3.4 — where does the decimal point go? (a) 0.2618 (b) 26.18 (c) 2.618 (d) 0.02618
26. 26.0.79 × 0.7 — where does the decimal point go? (a) 0.00553 (b) 0.553 (c) 0.0553 (d) 5.53
27. 27.3.2 × 0.4 — where does the decimal point go? (a) 0.128 (b) 1.28 (c) 0.0128 (d) 12.8
28. 28.0.61 × 0.3 — where does the decimal point go? (a) 1.83 (b) 0.183 (c) 0.00183 (d) 0.0183
29. 29.0.89 × 1.6 — where does the decimal point go? (a) 0.1424 (b) 14.24 (c) 0.01424 (d) 1.424
30. 30.7.2 × 33 — where does the decimal point go? (a) 2.376 (b) 237.6 (c) 23.76 (d) 2376
31. 31.0.54 × 0.4 — where does the decimal point go? (a) 0.00216 (b) 0.216 (c) 2.16 (d) 0.0216
32. 32.0.82 × 12 — where does the decimal point go? (a) 9.84 (b) 98.4 (c) 0.0984 (d) 0.984
33. 33.2.9 × 0.8 — where does the decimal point go? (a) 0.0232 (b) 2.32 (c) 0.232 (d) 23.2
34. 34.4.9 × 0.2 — where does the decimal point go? (a) 0.098 (b) 0.0098 (c) 0.98 (d) 9.8
35. 35.3.5 × 0.5 — where does the decimal point go? (a) 0.0175 (b) 17.5 (c) 1.75 (d) 0.175
36. 36.2.6 × 38 — where does the decimal point go? (a) 0.988 (b) 9.88 (c) 988 (d) 98.8
37. 37.0.18 × 0.8 — where does the decimal point go? (a) 0.144 (b) 0.0144 (c) 0.00144 (d) 1.44
38. 38.7.8 × 0.7 — where does the decimal point go? (a) 5.46 (b) 54.6 (c) 0.546 (d) 0.0546
39. 39.5.2 × 0.3 — where does the decimal point go? (a) 0.0156 (b) 0.156 (c) 1.56 (d) 15.6
40. 40.4.7 × 8 — where does the decimal point go? (a) 37.6 (b) 3.76 (c) 376 (d) 0.376

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