Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 558 · 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. 1.3.1 × 2.5 — where does the decimal point go? (a) 0.0775 (b) 7.75 (c) 0.775 (d) 77.5
2. 2.5.5 × 1.5 — where does the decimal point go? (a) 0.825 (b) 0.0825 (c) 8.25 (d) 82.5
3. 3.0.61 × 3.3 — where does the decimal point go? (a) 2.013 (b) 20.13 (c) 0.02013 (d) 0.2013
4. 4.6.7 × 0.7 — where does the decimal point go? (a) 0.469 (b) 4.69 (c) 46.9 (d) 0.0469
5. 5.2.4 × 0.9 — where does the decimal point go? (a) 2.16 (b) 21.6 (c) 0.0216 (d) 0.216
6. 6.5.2 × 4 — where does the decimal point go? (a) 0.208 (b) 208 (c) 2.08 (d) 20.8
7. 7.0.98 × 1.9 — where does the decimal point go? (a) 1.862 (b) 0.01862 (c) 18.62 (d) 0.1862
8. 8.8.5 × 33 — where does the decimal point go? (a) 2805 (b) 2.805 (c) 280.5 (d) 28.05
9. 9.7.4 × 6 — where does the decimal point go? (a) 4.44 (b) 44.4 (c) 444 (d) 0.444
10. 10.0.77 × 0.9 — where does the decimal point go? (a) 0.0693 (b) 6.93 (c) 0.00693 (d) 0.693
11. 11.3.7 × 18 — where does the decimal point go? (a) 6.66 (b) 66.6 (c) 666 (d) 0.666
12. 12.0.49 × 8 — where does the decimal point go? (a) 0.392 (b) 0.0392 (c) 39.2 (d) 3.92
13. 13.2.6 × 23 — where does the decimal point go? (a) 59.8 (b) 0.598 (c) 598 (d) 5.98
14. 14.5.6 × 6 — where does the decimal point go? (a) 0.336 (b) 3.36 (c) 33.6 (d) 336
15. 15.0.42 × 16 — where does the decimal point go? (a) 6.72 (b) 67.2 (c) 0.0672 (d) 0.672
16. 16.0.75 × 9 — where does the decimal point go? (a) 0.675 (b) 6.75 (c) 67.5 (d) 0.0675
17. 17.6.4 × 4 — where does the decimal point go? (a) 25.6 (b) 0.256 (c) 256 (d) 2.56
18. 18.4.9 × 45 — where does the decimal point go? (a) 2205 (b) 2.205 (c) 22.05 (d) 220.5
19. 19.0.45 × 47 — where does the decimal point go? (a) 21.15 (b) 2.115 (c) 0.2115 (d) 211.5
20. 20.0.65 × 0.5 — where does the decimal point go? (a) 0.325 (b) 0.00325 (c) 0.0325 (d) 3.25
21. 21.0.51 × 4 — where does the decimal point go? (a) 0.204 (b) 0.0204 (c) 2.04 (d) 20.4
22. 22.0.17 × 9 — where does the decimal point go? (a) 0.153 (b) 15.3 (c) 1.53 (d) 0.0153
23. 23.0.33 × 4 — where does the decimal point go? (a) 0.0132 (b) 13.2 (c) 0.132 (d) 1.32
24. 24.0.74 × 2.8 — where does the decimal point go? (a) 0.02072 (b) 0.2072 (c) 2.072 (d) 20.72
25. 25.0.44 × 42 — where does the decimal point go? (a) 1.848 (b) 0.1848 (c) 18.48 (d) 184.8
26. 26.6.4 × 0.6 — where does the decimal point go? (a) 38.4 (b) 0.384 (c) 0.0384 (d) 3.84
27. 27.9.6 × 23 — where does the decimal point go? (a) 2208 (b) 220.8 (c) 2.208 (d) 22.08
28. 28.0.94 × 8 — where does the decimal point go? (a) 7.52 (b) 0.0752 (c) 0.752 (d) 75.2
29. 29.5.7 × 8 — where does the decimal point go? (a) 4.56 (b) 0.456 (c) 45.6 (d) 456
30. 30.4.4 × 6 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 264 (d) 26.4
31. 31.6.2 × 48 — where does the decimal point go? (a) 2976 (b) 29.76 (c) 2.976 (d) 297.6
32. 32.0.43 × 2 — where does the decimal point go? (a) 0.086 (b) 8.6 (c) 0.86 (d) 0.0086
33. 33.5.2 × 1.8 — where does the decimal point go? (a) 9.36 (b) 0.0936 (c) 0.936 (d) 93.6
34. 34.0.31 × 0.2 — where does the decimal point go? (a) 0.00062 (b) 0.0062 (c) 0.62 (d) 0.062
35. 35.9.1 × 36 — where does the decimal point go? (a) 3276 (b) 3.276 (c) 327.6 (d) 32.76
36. 36.9.2 × 0.8 — where does the decimal point go? (a) 7.36 (b) 0.736 (c) 73.6 (d) 0.0736
37. 37.5.7 × 25 — where does the decimal point go? (a) 1.425 (b) 1425 (c) 14.25 (d) 142.5
38. 38.3.5 × 5 — where does the decimal point go? (a) 175 (b) 1.75 (c) 0.175 (d) 17.5
39. 39.1.3 × 0.3 — where does the decimal point go? (a) 0.039 (b) 0.39 (c) 3.9 (d) 0.0039
40. 40.0.32 × 31 — where does the decimal point go? (a) 0.0992 (b) 0.992 (c) 99.2 (d) 9.92

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