Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 133 · 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. 1.5.4 × 0.7 — where does the decimal point go? (a) 0.378 (b) 3.78 (c) 37.8 (d) 0.0378
2. 2.0.94 × 8 — where does the decimal point go? (a) 0.0752 (b) 75.2 (c) 0.752 (d) 7.52
3. 3.0.47 × 2 — where does the decimal point go? (a) 0.0094 (b) 9.4 (c) 0.94 (d) 0.094
4. 4.0.92 × 2.7 — where does the decimal point go? (a) 0.2484 (b) 24.84 (c) 2.484 (d) 0.02484
5. 5.0.32 × 3.8 — where does the decimal point go? (a) 0.1216 (b) 1.216 (c) 0.01216 (d) 12.16
6. 6.5.3 × 5 — where does the decimal point go? (a) 26.5 (b) 265 (c) 2.65 (d) 0.265
7. 7.4.5 × 0.5 — where does the decimal point go? (a) 2.25 (b) 0.0225 (c) 22.5 (d) 0.225
8. 8.9.3 × 0.6 — where does the decimal point go? (a) 0.0558 (b) 5.58 (c) 0.558 (d) 55.8
9. 9.0.89 × 1.9 — where does the decimal point go? (a) 1.691 (b) 0.1691 (c) 0.01691 (d) 16.91
10. 10.0.22 × 6 — where does the decimal point go? (a) 13.2 (b) 1.32 (c) 0.132 (d) 0.0132
11. 11.0.98 × 2.8 — where does the decimal point go? (a) 0.2744 (b) 2.744 (c) 27.44 (d) 0.02744
12. 12.0.89 × 0.9 — where does the decimal point go? (a) 0.00801 (b) 0.801 (c) 8.01 (d) 0.0801
13. 13.0.97 × 1.7 — where does the decimal point go? (a) 16.49 (b) 0.1649 (c) 1.649 (d) 0.01649
14. 14.3.2 × 4 — where does the decimal point go? (a) 0.128 (b) 128 (c) 12.8 (d) 1.28
15. 15.6.7 × 0.8 — where does the decimal point go? (a) 5.36 (b) 0.536 (c) 0.0536 (d) 53.6
16. 16.0.22 × 0.7 — where does the decimal point go? (a) 0.154 (b) 0.0154 (c) 1.54 (d) 0.00154
17. 17.9.3 × 0.3 — where does the decimal point go? (a) 0.279 (b) 27.9 (c) 2.79 (d) 0.0279
18. 18.0.62 × 8 — where does the decimal point go? (a) 4.96 (b) 0.496 (c) 0.0496 (d) 49.6
19. 19.0.18 × 6 — where does the decimal point go? (a) 1.08 (b) 0.0108 (c) 10.8 (d) 0.108
20. 20.0.82 × 8 — where does the decimal point go? (a) 0.656 (b) 0.0656 (c) 6.56 (d) 65.6
21. 21.7.8 × 2.1 — where does the decimal point go? (a) 0.1638 (b) 1.638 (c) 16.38 (d) 163.8
22. 22.0.75 × 1.5 — where does the decimal point go? (a) 1.125 (b) 0.01125 (c) 11.25 (d) 0.1125
23. 23.0.46 × 3 — where does the decimal point go? (a) 0.138 (b) 0.0138 (c) 1.38 (d) 13.8
24. 24.7.2 × 22 — where does the decimal point go? (a) 158.4 (b) 15.84 (c) 1584 (d) 1.584
25. 25.0.79 × 48 — where does the decimal point go? (a) 0.3792 (b) 3.792 (c) 37.92 (d) 379.2
26. 26.0.77 × 39 — where does the decimal point go? (a) 300.3 (b) 0.3003 (c) 30.03 (d) 3.003
27. 27.4.1 × 5 — where does the decimal point go? (a) 0.205 (b) 205 (c) 20.5 (d) 2.05
28. 28.0.22 × 21 — where does the decimal point go? (a) 0.0462 (b) 46.2 (c) 0.462 (d) 4.62
29. 29.0.23 × 5 — where does the decimal point go? (a) 1.15 (b) 0.115 (c) 0.0115 (d) 11.5
30. 30.0.43 × 45 — where does the decimal point go? (a) 19.35 (b) 0.1935 (c) 1.935 (d) 193.5
31. 31.8.4 × 7 — where does the decimal point go? (a) 588 (b) 5.88 (c) 0.588 (d) 58.8
32. 32.5.8 × 3 — where does the decimal point go? (a) 0.174 (b) 174 (c) 1.74 (d) 17.4
33. 33.8.9 × 0.5 — where does the decimal point go? (a) 0.445 (b) 0.0445 (c) 44.5 (d) 4.45
34. 34.0.28 × 18 — where does the decimal point go? (a) 0.0504 (b) 0.504 (c) 5.04 (d) 50.4
35. 35.0.86 × 47 — where does the decimal point go? (a) 4.042 (b) 0.4042 (c) 40.42 (d) 404.2
36. 36.6.1 × 0.2 — where does the decimal point go? (a) 0.122 (b) 12.2 (c) 0.0122 (d) 1.22
37. 37.0.97 × 32 — where does the decimal point go? (a) 310.4 (b) 31.04 (c) 3.104 (d) 0.3104
38. 38.0.67 × 0.4 — where does the decimal point go? (a) 0.268 (b) 0.0268 (c) 0.00268 (d) 2.68
39. 39.0.88 × 0.4 — where does the decimal point go? (a) 0.352 (b) 0.00352 (c) 0.0352 (d) 3.52
40. 40.2.2 × 1.8 — where does the decimal point go? (a) 0.396 (b) 3.96 (c) 0.0396 (d) 39.6

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