Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 458 · 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. 1.0.63 × 1.9 — where does the decimal point go? (a) 0.01197 (b) 1.197 (c) 11.97 (d) 0.1197
2. 2.9.7 × 7 — where does the decimal point go? (a) 6.79 (b) 67.9 (c) 0.679 (d) 679
3. 3.0.97 × 6 — where does the decimal point go? (a) 5.82 (b) 0.582 (c) 0.0582 (d) 58.2
4. 4.3.5 × 2.3 — where does the decimal point go? (a) 8.05 (b) 0.0805 (c) 0.805 (d) 80.5
5. 5.4.4 × 0.7 — where does the decimal point go? (a) 0.0308 (b) 30.8 (c) 3.08 (d) 0.308
6. 6.0.69 × 33 — where does the decimal point go? (a) 0.2277 (b) 2.277 (c) 227.7 (d) 22.77
7. 7.0.81 × 31 — where does the decimal point go? (a) 25.11 (b) 0.2511 (c) 2.511 (d) 251.1
8. 8.0.16 × 0.3 — where does the decimal point go? (a) 0.48 (b) 0.00048 (c) 0.048 (d) 0.0048
9. 9.0.33 × 2 — where does the decimal point go? (a) 0.66 (b) 0.0066 (c) 0.066 (d) 6.6
10. 10.0.27 × 8 — where does the decimal point go? (a) 2.16 (b) 0.216 (c) 0.0216 (d) 21.6
11. 11.3.7 × 2 — where does the decimal point go? (a) 74 (b) 0.074 (c) 7.4 (d) 0.74
12. 12.5.2 × 8 — where does the decimal point go? (a) 4.16 (b) 0.416 (c) 416 (d) 41.6
13. 13.0.72 × 6 — where does the decimal point go? (a) 4.32 (b) 0.0432 (c) 0.432 (d) 43.2
14. 14.0.54 × 1.9 — where does the decimal point go? (a) 1.026 (b) 10.26 (c) 0.01026 (d) 0.1026
15. 15.5.7 × 2.3 — where does the decimal point go? (a) 0.1311 (b) 13.11 (c) 1.311 (d) 131.1
16. 16.8.1 × 7 — where does the decimal point go? (a) 0.567 (b) 567 (c) 56.7 (d) 5.67
17. 17.7.5 × 5 — where does the decimal point go? (a) 3.75 (b) 375 (c) 0.375 (d) 37.5
18. 18.0.33 × 41 — where does the decimal point go? (a) 0.1353 (b) 135.3 (c) 13.53 (d) 1.353
19. 19.0.81 × 3.6 — where does the decimal point go? (a) 0.02916 (b) 29.16 (c) 2.916 (d) 0.2916
20. 20.0.17 × 44 — where does the decimal point go? (a) 74.8 (b) 7.48 (c) 0.748 (d) 0.0748
21. 21.0.63 × 0.7 — where does the decimal point go? (a) 4.41 (b) 0.441 (c) 0.0441 (d) 0.00441
22. 22.5.3 × 1.7 — where does the decimal point go? (a) 0.901 (b) 90.1 (c) 0.0901 (d) 9.01
23. 23.7.2 × 3.7 — where does the decimal point go? (a) 26.64 (b) 266.4 (c) 2.664 (d) 0.2664
24. 24.0.48 × 0.2 — where does the decimal point go? (a) 0.096 (b) 0.96 (c) 0.0096 (d) 0.00096
25. 25.9.3 × 43 — where does the decimal point go? (a) 3999 (b) 39.99 (c) 3.999 (d) 399.9
26. 26.0.36 × 2 — where does the decimal point go? (a) 0.0072 (b) 0.072 (c) 7.2 (d) 0.72
27. 27.0.91 × 44 — where does the decimal point go? (a) 0.4004 (b) 400.4 (c) 40.04 (d) 4.004
28. 28.5.2 × 7 — where does the decimal point go? (a) 3.64 (b) 364 (c) 36.4 (d) 0.364
29. 29.0.27 × 4 — where does the decimal point go? (a) 0.0108 (b) 10.8 (c) 1.08 (d) 0.108
30. 30.0.64 × 0.3 — where does the decimal point go? (a) 1.92 (b) 0.0192 (c) 0.00192 (d) 0.192
31. 31.4.3 × 5 — where does the decimal point go? (a) 0.215 (b) 21.5 (c) 215 (d) 2.15
32. 32.0.43 × 1.2 — where does the decimal point go? (a) 5.16 (b) 0.00516 (c) 0.0516 (d) 0.516
33. 33.0.38 × 1.9 — where does the decimal point go? (a) 0.0722 (b) 0.722 (c) 0.00722 (d) 7.22
34. 34.1.3 × 8 — where does the decimal point go? (a) 10.4 (b) 1.04 (c) 0.104 (d) 104
35. 35.3.4 × 7 — where does the decimal point go? (a) 23.8 (b) 0.238 (c) 2.38 (d) 238
36. 36.6.3 × 3.3 — where does the decimal point go? (a) 2.079 (b) 0.2079 (c) 207.9 (d) 20.79
37. 37.1.7 × 1.1 — where does the decimal point go? (a) 0.0187 (b) 1.87 (c) 18.7 (d) 0.187
38. 38.0.49 × 1.8 — where does the decimal point go? (a) 0.00882 (b) 8.82 (c) 0.0882 (d) 0.882
39. 39.0.13 × 0.2 — where does the decimal point go? (a) 0.026 (b) 0.26 (c) 0.00026 (d) 0.0026
40. 40.1.2 × 1.6 — where does the decimal point go? (a) 19.2 (b) 0.192 (c) 0.0192 (d) 1.92

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