Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 352 · 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. 1.0.67 × 3 — where does the decimal point go? (a) 2.01 (b) 0.201 (c) 0.0201 (d) 20.1
2. 2.0.91 × 29 — where does the decimal point go? (a) 2.639 (b) 263.9 (c) 0.2639 (d) 26.39
3. 3.0.16 × 0.9 — where does the decimal point go? (a) 1.44 (b) 0.144 (c) 0.0144 (d) 0.00144
4. 4.0.97 × 24 — where does the decimal point go? (a) 2.328 (b) 232.8 (c) 0.2328 (d) 23.28
5. 5.0.43 × 3.7 — where does the decimal point go? (a) 15.91 (b) 0.1591 (c) 1.591 (d) 0.01591
6. 6.6.4 × 0.7 — where does the decimal point go? (a) 0.0448 (b) 44.8 (c) 4.48 (d) 0.448
7. 7.2.5 × 3 — where does the decimal point go? (a) 0.075 (b) 75 (c) 0.75 (d) 7.5
8. 8.0.82 × 9 — where does the decimal point go? (a) 7.38 (b) 0.0738 (c) 0.738 (d) 73.8
9. 9.0.14 × 9 — where does the decimal point go? (a) 1.26 (b) 0.0126 (c) 0.126 (d) 12.6
10. 10.2.1 × 31 — where does the decimal point go? (a) 651 (b) 6.51 (c) 65.1 (d) 0.651
11. 11.3.3 × 4.3 — where does the decimal point go? (a) 14.19 (b) 1.419 (c) 0.1419 (d) 141.9
12. 12.0.17 × 6 — where does the decimal point go? (a) 0.0102 (b) 0.102 (c) 1.02 (d) 10.2
13. 13.7.1 × 1.3 — where does the decimal point go? (a) 0.923 (b) 9.23 (c) 92.3 (d) 0.0923
14. 14.0.81 × 0.4 — where does the decimal point go? (a) 0.0324 (b) 0.324 (c) 0.00324 (d) 3.24
15. 15.5.7 × 4 — where does the decimal point go? (a) 22.8 (b) 2.28 (c) 228 (d) 0.228
16. 16.8.9 × 1.8 — where does the decimal point go? (a) 16.02 (b) 1.602 (c) 160.2 (d) 0.1602
17. 17.0.99 × 0.9 — where does the decimal point go? (a) 0.891 (b) 0.00891 (c) 8.91 (d) 0.0891
18. 18.5.3 × 8 — where does the decimal point go? (a) 4.24 (b) 424 (c) 0.424 (d) 42.4
19. 19.0.98 × 4.2 — where does the decimal point go? (a) 0.4116 (b) 4.116 (c) 0.04116 (d) 41.16
20. 20.0.23 × 15 — where does the decimal point go? (a) 0.0345 (b) 3.45 (c) 0.345 (d) 34.5
21. 21.7.6 × 0.7 — where does the decimal point go? (a) 53.2 (b) 0.0532 (c) 5.32 (d) 0.532
22. 22.0.89 × 2.3 — where does the decimal point go? (a) 0.2047 (b) 0.02047 (c) 2.047 (d) 20.47
23. 23.7.3 × 34 — where does the decimal point go? (a) 2482 (b) 2.482 (c) 248.2 (d) 24.82
24. 24.0.53 × 0.6 — where does the decimal point go? (a) 0.00318 (b) 3.18 (c) 0.0318 (d) 0.318
25. 25.3.2 × 38 — where does the decimal point go? (a) 12.16 (b) 121.6 (c) 1.216 (d) 1216
26. 26.4.8 × 39 — where does the decimal point go? (a) 1872 (b) 1.872 (c) 187.2 (d) 18.72
27. 27.0.64 × 7 — where does the decimal point go? (a) 4.48 (b) 44.8 (c) 0.448 (d) 0.0448
28. 28.6.2 × 0.2 — where does the decimal point go? (a) 0.124 (b) 1.24 (c) 0.0124 (d) 12.4
29. 29.3.6 × 0.8 — where does the decimal point go? (a) 0.288 (b) 2.88 (c) 28.8 (d) 0.0288
30. 30.0.72 × 34 — where does the decimal point go? (a) 244.8 (b) 0.2448 (c) 2.448 (d) 24.48
31. 31.8.1 × 2.8 — where does the decimal point go? (a) 22.68 (b) 0.2268 (c) 226.8 (d) 2.268
32. 32.0.23 × 0.4 — where does the decimal point go? (a) 0.0092 (b) 0.092 (c) 0.92 (d) 0.00092
33. 33.7.7 × 21 — where does the decimal point go? (a) 161.7 (b) 1.617 (c) 1617 (d) 16.17
34. 34.0.97 × 25 — where does the decimal point go? (a) 24.25 (b) 0.2425 (c) 2.425 (d) 242.5
35. 35.6.2 × 46 — where does the decimal point go? (a) 2.852 (b) 28.52 (c) 2852 (d) 285.2
36. 36.0.14 × 46 — where does the decimal point go? (a) 6.44 (b) 0.644 (c) 0.0644 (d) 64.4
37. 37.0.17 × 47 — where does the decimal point go? (a) 0.799 (b) 7.99 (c) 79.9 (d) 0.0799
38. 38.2.9 × 3.4 — where does the decimal point go? (a) 0.0986 (b) 0.986 (c) 98.6 (d) 9.86
39. 39.0.79 × 9 — where does the decimal point go? (a) 71.1 (b) 0.0711 (c) 7.11 (d) 0.711
40. 40.1.3 × 0.9 — where does the decimal point go? (a) 1.17 (b) 0.0117 (c) 11.7 (d) 0.117

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