Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 582 · 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. 1.6.9 × 4.2 — where does the decimal point go? (a) 0.2898 (b) 289.8 (c) 2.898 (d) 28.98
2. 2.0.22 × 4.2 — where does the decimal point go? (a) 0.00924 (b) 9.24 (c) 0.0924 (d) 0.924
3. 3.0.81 × 23 — where does the decimal point go? (a) 0.1863 (b) 186.3 (c) 18.63 (d) 1.863
4. 4.0.27 × 2.3 — where does the decimal point go? (a) 0.00621 (b) 0.0621 (c) 0.621 (d) 6.21
5. 5.0.82 × 1.4 — where does the decimal point go? (a) 1.148 (b) 0.01148 (c) 11.48 (d) 0.1148
6. 6.9.8 × 44 — where does the decimal point go? (a) 43.12 (b) 4312 (c) 431.2 (d) 4.312
7. 7.0.39 × 0.2 — where does the decimal point go? (a) 0.00078 (b) 0.078 (c) 0.0078 (d) 0.78
8. 8.0.45 × 7 — where does the decimal point go? (a) 0.315 (b) 31.5 (c) 0.0315 (d) 3.15
9. 9.6.4 × 0.3 — where does the decimal point go? (a) 19.2 (b) 0.192 (c) 1.92 (d) 0.0192
10. 10.0.97 × 2.3 — where does the decimal point go? (a) 2.231 (b) 22.31 (c) 0.2231 (d) 0.02231
11. 11.6.1 × 1.8 — where does the decimal point go? (a) 1.098 (b) 109.8 (c) 0.1098 (d) 10.98
12. 12.0.91 × 1.7 — where does the decimal point go? (a) 0.01547 (b) 1.547 (c) 15.47 (d) 0.1547
13. 13.0.36 × 0.2 — where does the decimal point go? (a) 0.072 (b) 0.0072 (c) 0.00072 (d) 0.72
14. 14.1.7 × 46 — where does the decimal point go? (a) 782 (b) 0.782 (c) 7.82 (d) 78.2
15. 15.6.1 × 1.7 — where does the decimal point go? (a) 1.037 (b) 103.7 (c) 0.1037 (d) 10.37
16. 16.1.9 × 19 — where does the decimal point go? (a) 361 (b) 3.61 (c) 36.1 (d) 0.361
17. 17.8.3 × 8 — where does the decimal point go? (a) 0.664 (b) 6.64 (c) 664 (d) 66.4
18. 18.0.99 × 1.7 — where does the decimal point go? (a) 0.01683 (b) 0.1683 (c) 16.83 (d) 1.683
19. 19.0.78 × 2 — where does the decimal point go? (a) 1.56 (b) 15.6 (c) 0.156 (d) 0.0156
20. 20.0.58 × 3.6 — where does the decimal point go? (a) 2.088 (b) 20.88 (c) 0.2088 (d) 0.02088
21. 21.1.3 × 3 — where does the decimal point go? (a) 0.039 (b) 39 (c) 3.9 (d) 0.39
22. 22.7.2 × 18 — where does the decimal point go? (a) 1296 (b) 1.296 (c) 12.96 (d) 129.6
23. 23.3.7 × 4.2 — where does the decimal point go? (a) 1.554 (b) 155.4 (c) 0.1554 (d) 15.54
24. 24.0.48 × 4 — where does the decimal point go? (a) 0.0192 (b) 1.92 (c) 19.2 (d) 0.192
25. 25.3.6 × 23 — where does the decimal point go? (a) 8.28 (b) 0.828 (c) 82.8 (d) 828
26. 26.0.53 × 6 — where does the decimal point go? (a) 31.8 (b) 0.0318 (c) 3.18 (d) 0.318
27. 27.9.1 × 0.9 — where does the decimal point go? (a) 8.19 (b) 0.0819 (c) 0.819 (d) 81.9
28. 28.0.49 × 0.8 — where does the decimal point go? (a) 0.00392 (b) 3.92 (c) 0.392 (d) 0.0392
29. 29.1.8 × 0.8 — where does the decimal point go? (a) 0.144 (b) 1.44 (c) 0.0144 (d) 14.4
30. 30.0.67 × 2.8 — where does the decimal point go? (a) 1.876 (b) 0.01876 (c) 18.76 (d) 0.1876
31. 31.9.8 × 3 — where does the decimal point go? (a) 2.94 (b) 0.294 (c) 294 (d) 29.4
32. 32.0.76 × 39 — where does the decimal point go? (a) 0.2964 (b) 2.964 (c) 29.64 (d) 296.4
33. 33.0.71 × 0.4 — where does the decimal point go? (a) 0.284 (b) 0.00284 (c) 0.0284 (d) 2.84
34. 34.2.5 × 1.1 — where does the decimal point go? (a) 0.275 (b) 2.75 (c) 0.0275 (d) 27.5
35. 35.0.31 × 0.3 — where does the decimal point go? (a) 0.093 (b) 0.93 (c) 0.0093 (d) 0.00093
36. 36.0.58 × 3.7 — where does the decimal point go? (a) 0.2146 (b) 0.02146 (c) 2.146 (d) 21.46
37. 37.8.1 × 0.4 — where does the decimal point go? (a) 3.24 (b) 32.4 (c) 0.0324 (d) 0.324
38. 38.5.2 × 0.3 — where does the decimal point go? (a) 0.0156 (b) 0.156 (c) 1.56 (d) 15.6
39. 39.8.7 × 7 — where does the decimal point go? (a) 60.9 (b) 609 (c) 0.609 (d) 6.09
40. 40.0.36 × 28 — where does the decimal point go? (a) 1.008 (b) 10.08 (c) 100.8 (d) 0.1008

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