Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 524 · 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. 1.0.99 × 23 — where does the decimal point go? (a) 0.2277 (b) 22.77 (c) 227.7 (d) 2.277
2. 2.0.93 × 0.9 — where does the decimal point go? (a) 0.00837 (b) 0.837 (c) 0.0837 (d) 8.37
3. 3.0.82 × 0.7 — where does the decimal point go? (a) 5.74 (b) 0.0574 (c) 0.574 (d) 0.00574
4. 4.9.6 × 3.4 — where does the decimal point go? (a) 3.264 (b) 0.3264 (c) 32.64 (d) 326.4
5. 5.0.29 × 6 — where does the decimal point go? (a) 17.4 (b) 0.174 (c) 0.0174 (d) 1.74
6. 6.9.1 × 2 — where does the decimal point go? (a) 18.2 (b) 182 (c) 0.182 (d) 1.82
7. 7.0.98 × 46 — where does the decimal point go? (a) 4.508 (b) 0.4508 (c) 450.8 (d) 45.08
8. 8.3.1 × 2 — where does the decimal point go? (a) 62 (b) 0.62 (c) 6.2 (d) 0.062
9. 9.0.61 × 27 — where does the decimal point go? (a) 0.1647 (b) 164.7 (c) 16.47 (d) 1.647
10. 10.4.8 × 0.4 — where does the decimal point go? (a) 0.192 (b) 0.0192 (c) 19.2 (d) 1.92
11. 11.0.94 × 43 — where does the decimal point go? (a) 4.042 (b) 404.2 (c) 0.4042 (d) 40.42
12. 12.7.2 × 37 — where does the decimal point go? (a) 2.664 (b) 2664 (c) 266.4 (d) 26.64
13. 13.0.42 × 9 — where does the decimal point go? (a) 0.378 (b) 0.0378 (c) 3.78 (d) 37.8
14. 14.0.91 × 0.8 — where does the decimal point go? (a) 0.0728 (b) 0.728 (c) 7.28 (d) 0.00728
15. 15.0.19 × 0.5 — where does the decimal point go? (a) 0.0095 (b) 0.95 (c) 0.095 (d) 0.00095
16. 16.7.9 × 0.2 — where does the decimal point go? (a) 1.58 (b) 0.0158 (c) 0.158 (d) 15.8
17. 17.0.97 × 4.3 — where does the decimal point go? (a) 41.71 (b) 0.4171 (c) 0.04171 (d) 4.171
18. 18.7.6 × 2 — where does the decimal point go? (a) 1.52 (b) 152 (c) 15.2 (d) 0.152
19. 19.0.28 × 3.3 — where does the decimal point go? (a) 9.24 (b) 0.00924 (c) 0.0924 (d) 0.924
20. 20.3.6 × 0.3 — where does the decimal point go? (a) 1.08 (b) 0.0108 (c) 0.108 (d) 10.8
21. 21.7.6 × 9 — where does the decimal point go? (a) 0.684 (b) 684 (c) 68.4 (d) 6.84
22. 22.8.7 × 44 — where does the decimal point go? (a) 382.8 (b) 38.28 (c) 3828 (d) 3.828
23. 23.3.1 × 0.2 — where does the decimal point go? (a) 0.0062 (b) 6.2 (c) 0.62 (d) 0.062
24. 24.0.98 × 8 — where does the decimal point go? (a) 78.4 (b) 0.784 (c) 7.84 (d) 0.0784
25. 25.0.66 × 4 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 0.0264 (d) 26.4
26. 26.0.54 × 4.2 — where does the decimal point go? (a) 0.2268 (b) 22.68 (c) 0.02268 (d) 2.268
27. 27.0.23 × 8 — where does the decimal point go? (a) 0.0184 (b) 1.84 (c) 18.4 (d) 0.184
28. 28.3.7 × 4.2 — where does the decimal point go? (a) 0.1554 (b) 1.554 (c) 155.4 (d) 15.54
29. 29.9.1 × 24 — where does the decimal point go? (a) 2184 (b) 218.4 (c) 21.84 (d) 2.184
30. 30.0.76 × 9 — where does the decimal point go? (a) 0.0684 (b) 6.84 (c) 68.4 (d) 0.684
31. 31.0.27 × 32 — where does the decimal point go? (a) 8.64 (b) 0.0864 (c) 86.4 (d) 0.864
32. 32.2.7 × 0.3 — where does the decimal point go? (a) 0.0081 (b) 0.081 (c) 0.81 (d) 8.1
33. 33.3.9 × 0.2 — where does the decimal point go? (a) 0.078 (b) 0.78 (c) 7.8 (d) 0.0078
34. 34.0.42 × 4 — where does the decimal point go? (a) 0.168 (b) 1.68 (c) 16.8 (d) 0.0168
35. 35.0.43 × 2 — where does the decimal point go? (a) 0.86 (b) 0.086 (c) 8.6 (d) 0.0086
36. 36.0.29 × 2 — where does the decimal point go? (a) 0.58 (b) 0.058 (c) 5.8 (d) 0.0058
37. 37.0.45 × 0.9 — where does the decimal point go? (a) 0.405 (b) 0.0405 (c) 4.05 (d) 0.00405
38. 38.0.16 × 0.8 — where does the decimal point go? (a) 0.00128 (b) 1.28 (c) 0.128 (d) 0.0128
39. 39.3.8 × 21 — where does the decimal point go? (a) 7.98 (b) 79.8 (c) 0.798 (d) 798
40. 40.2.4 × 3.3 — where does the decimal point go? (a) 79.2 (b) 7.92 (c) 0.792 (d) 0.0792

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