Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 74 · 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. 1.8.7 × 0.9 — where does the decimal point go? (a) 78.3 (b) 0.783 (c) 7.83 (d) 0.0783
2. 2.0.12 × 7 — where does the decimal point go? (a) 0.084 (b) 0.0084 (c) 0.84 (d) 8.4
3. 3.0.12 × 48 — where does the decimal point go? (a) 0.0576 (b) 5.76 (c) 0.576 (d) 57.6
4. 4.0.14 × 4.8 — where does the decimal point go? (a) 6.72 (b) 0.672 (c) 0.00672 (d) 0.0672
5. 5.1.3 × 0.6 — where does the decimal point go? (a) 0.78 (b) 7.8 (c) 0.0078 (d) 0.078
6. 6.9.9 × 0.6 — where does the decimal point go? (a) 59.4 (b) 0.0594 (c) 5.94 (d) 0.594
7. 7.0.17 × 7 — where does the decimal point go? (a) 0.0119 (b) 1.19 (c) 0.119 (d) 11.9
8. 8.0.99 × 0.8 — where does the decimal point go? (a) 0.792 (b) 7.92 (c) 0.0792 (d) 0.00792
9. 9.6.2 × 0.3 — where does the decimal point go? (a) 0.186 (b) 0.0186 (c) 1.86 (d) 18.6
10. 10.0.98 × 22 — where does the decimal point go? (a) 215.6 (b) 0.2156 (c) 2.156 (d) 21.56
11. 11.4.3 × 0.5 — where does the decimal point go? (a) 0.0215 (b) 2.15 (c) 0.215 (d) 21.5
12. 12.4.3 × 21 — where does the decimal point go? (a) 903 (b) 0.903 (c) 90.3 (d) 9.03
13. 13.1.4 × 0.2 — where does the decimal point go? (a) 0.28 (b) 0.028 (c) 0.0028 (d) 2.8
14. 14.0.62 × 4.4 — where does the decimal point go? (a) 0.2728 (b) 2.728 (c) 0.02728 (d) 27.28
15. 15.7.4 × 7 — where does the decimal point go? (a) 518 (b) 5.18 (c) 0.518 (d) 51.8
16. 16.9.5 × 9 — where does the decimal point go? (a) 85.5 (b) 8.55 (c) 0.855 (d) 855
17. 17.9.8 × 0.6 — where does the decimal point go? (a) 58.8 (b) 0.0588 (c) 0.588 (d) 5.88
18. 18.0.72 × 4.7 — where does the decimal point go? (a) 0.03384 (b) 3.384 (c) 33.84 (d) 0.3384
19. 19.0.59 × 7 — where does the decimal point go? (a) 0.0413 (b) 0.413 (c) 4.13 (d) 41.3
20. 20.0.23 × 39 — where does the decimal point go? (a) 8.97 (b) 0.0897 (c) 89.7 (d) 0.897
21. 21.2.5 × 7 — where does the decimal point go? (a) 0.175 (b) 1.75 (c) 17.5 (d) 175
22. 22.9.1 × 3.4 — where does the decimal point go? (a) 30.94 (b) 3.094 (c) 0.3094 (d) 309.4
23. 23.7.4 × 2 — where does the decimal point go? (a) 148 (b) 1.48 (c) 0.148 (d) 14.8
24. 24.0.46 × 47 — where does the decimal point go? (a) 0.2162 (b) 21.62 (c) 2.162 (d) 216.2
25. 25.0.31 × 2.7 — where does the decimal point go? (a) 0.0837 (b) 8.37 (c) 0.837 (d) 0.00837
26. 26.0.89 × 1.9 — where does the decimal point go? (a) 0.01691 (b) 16.91 (c) 1.691 (d) 0.1691
27. 27.9.9 × 3.4 — where does the decimal point go? (a) 0.3366 (b) 3.366 (c) 33.66 (d) 336.6
28. 28.0.84 × 1.9 — where does the decimal point go? (a) 0.1596 (b) 1.596 (c) 0.01596 (d) 15.96
29. 29.1.9 × 25 — where does the decimal point go? (a) 4.75 (b) 0.475 (c) 47.5 (d) 475
30. 30.0.86 × 0.9 — where does the decimal point go? (a) 0.0774 (b) 0.00774 (c) 0.774 (d) 7.74
31. 31.7.1 × 2 — where does the decimal point go? (a) 14.2 (b) 1.42 (c) 142 (d) 0.142
32. 32.0.56 × 0.7 — where does the decimal point go? (a) 0.392 (b) 0.0392 (c) 0.00392 (d) 3.92
33. 33.0.92 × 4.6 — where does the decimal point go? (a) 4.232 (b) 0.4232 (c) 42.32 (d) 0.04232
34. 34.0.89 × 28 — where does the decimal point go? (a) 0.2492 (b) 249.2 (c) 24.92 (d) 2.492
35. 35.0.27 × 37 — where does the decimal point go? (a) 0.0999 (b) 0.999 (c) 99.9 (d) 9.99
36. 36.4.9 × 0.5 — where does the decimal point go? (a) 0.0245 (b) 0.245 (c) 24.5 (d) 2.45
37. 37.0.24 × 9 — where does the decimal point go? (a) 2.16 (b) 0.216 (c) 0.0216 (d) 21.6
38. 38.5.9 × 4 — where does the decimal point go? (a) 2.36 (b) 23.6 (c) 0.236 (d) 236
39. 39.2.1 × 39 — where does the decimal point go? (a) 0.819 (b) 81.9 (c) 819 (d) 8.19
40. 40.0.98 × 34 — where does the decimal point go? (a) 333.2 (b) 3.332 (c) 33.32 (d) 0.3332

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