Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 370 · 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. 1.1.8 × 2.2 — where does the decimal point go? (a) 0.0396 (b) 39.6 (c) 0.396 (d) 3.96
2. 2.6.1 × 4 — where does the decimal point go? (a) 2.44 (b) 0.244 (c) 244 (d) 24.4
3. 3.6.3 × 29 — where does the decimal point go? (a) 1.827 (b) 18.27 (c) 182.7 (d) 1827
4. 4.0.91 × 39 — where does the decimal point go? (a) 35.49 (b) 3.549 (c) 0.3549 (d) 354.9
5. 5.2.4 × 1.1 — where does the decimal point go? (a) 0.264 (b) 26.4 (c) 2.64 (d) 0.0264
6. 6.0.82 × 0.9 — where does the decimal point go? (a) 0.738 (b) 7.38 (c) 0.0738 (d) 0.00738
7. 7.0.76 × 0.3 — where does the decimal point go? (a) 0.00228 (b) 0.0228 (c) 2.28 (d) 0.228
8. 8.3.1 × 1.8 — where does the decimal point go? (a) 5.58 (b) 0.0558 (c) 55.8 (d) 0.558
9. 9.0.56 × 0.7 — where does the decimal point go? (a) 0.0392 (b) 0.392 (c) 0.00392 (d) 3.92
10. 10.4.2 × 3 — where does the decimal point go? (a) 1.26 (b) 12.6 (c) 126 (d) 0.126
11. 11.0.24 × 9 — where does the decimal point go? (a) 21.6 (b) 2.16 (c) 0.0216 (d) 0.216
12. 12.8.8 × 3.4 — where does the decimal point go? (a) 29.92 (b) 299.2 (c) 2.992 (d) 0.2992
13. 13.0.76 × 12 — where does the decimal point go? (a) 9.12 (b) 0.912 (c) 91.2 (d) 0.0912
14. 14.0.21 × 2 — where does the decimal point go? (a) 0.042 (b) 0.0042 (c) 4.2 (d) 0.42
15. 15.8.1 × 27 — where does the decimal point go? (a) 2187 (b) 21.87 (c) 2.187 (d) 218.7
16. 16.0.73 × 2.1 — where does the decimal point go? (a) 0.01533 (b) 15.33 (c) 1.533 (d) 0.1533
17. 17.6.6 × 1.4 — where does the decimal point go? (a) 9.24 (b) 92.4 (c) 0.0924 (d) 0.924
18. 18.1.3 × 4 — where does the decimal point go? (a) 5.2 (b) 0.52 (c) 52 (d) 0.052
19. 19.0.67 × 1.3 — where does the decimal point go? (a) 0.0871 (b) 8.71 (c) 0.00871 (d) 0.871
20. 20.8.9 × 12 — where does the decimal point go? (a) 1.068 (b) 106.8 (c) 10.68 (d) 1068
21. 21.5.8 × 2 — where does the decimal point go? (a) 116 (b) 11.6 (c) 0.116 (d) 1.16
22. 22.0.16 × 0.8 — where does the decimal point go? (a) 1.28 (b) 0.0128 (c) 0.128 (d) 0.00128
23. 23.4.9 × 0.6 — where does the decimal point go? (a) 0.0294 (b) 29.4 (c) 0.294 (d) 2.94
24. 24.1.9 × 18 — where does the decimal point go? (a) 0.342 (b) 342 (c) 3.42 (d) 34.2
25. 25.7.6 × 3 — where does the decimal point go? (a) 22.8 (b) 228 (c) 2.28 (d) 0.228
26. 26.0.27 × 3.9 — where does the decimal point go? (a) 0.1053 (b) 10.53 (c) 1.053 (d) 0.01053
27. 27.5.1 × 21 — where does the decimal point go? (a) 1.071 (b) 1071 (c) 10.71 (d) 107.1
28. 28.0.27 × 2 — where does the decimal point go? (a) 0.0054 (b) 0.54 (c) 0.054 (d) 5.4
29. 29.0.59 × 5 — where does the decimal point go? (a) 2.95 (b) 0.295 (c) 0.0295 (d) 29.5
30. 30.9.5 × 17 — where does the decimal point go? (a) 16.15 (b) 1.615 (c) 161.5 (d) 1615
31. 31.4.1 × 0.3 — where does the decimal point go? (a) 0.0123 (b) 12.3 (c) 1.23 (d) 0.123
32. 32.1.2 × 46 — where does the decimal point go? (a) 5.52 (b) 0.552 (c) 552 (d) 55.2
33. 33.3.2 × 0.3 — where does the decimal point go? (a) 0.96 (b) 0.0096 (c) 9.6 (d) 0.096
34. 34.5.9 × 4.5 — where does the decimal point go? (a) 0.2655 (b) 26.55 (c) 2.655 (d) 265.5
35. 35.4.1 × 16 — where does the decimal point go? (a) 6.56 (b) 65.6 (c) 656 (d) 0.656
36. 36.0.34 × 2.2 — where does the decimal point go? (a) 0.748 (b) 0.00748 (c) 0.0748 (d) 7.48
37. 37.0.13 × 9 — where does the decimal point go? (a) 1.17 (b) 0.117 (c) 0.0117 (d) 11.7
38. 38.8.9 × 0.4 — where does the decimal point go? (a) 35.6 (b) 0.0356 (c) 0.356 (d) 3.56
39. 39.5.6 × 38 — where does the decimal point go? (a) 2.128 (b) 2128 (c) 212.8 (d) 21.28
40. 40.0.48 × 28 — where does the decimal point go? (a) 0.1344 (b) 13.44 (c) 1.344 (d) 134.4

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