Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 718 · 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. 1.8.2 × 8 — where does the decimal point go? (a) 65.6 (b) 0.656 (c) 656 (d) 6.56
2. 2.0.32 × 3 — where does the decimal point go? (a) 0.0096 (b) 0.096 (c) 9.6 (d) 0.96
3. 3.3.1 × 0.5 — where does the decimal point go? (a) 0.155 (b) 0.0155 (c) 15.5 (d) 1.55
4. 4.0.67 × 47 — where does the decimal point go? (a) 31.49 (b) 314.9 (c) 0.3149 (d) 3.149
5. 5.0.29 × 48 — where does the decimal point go? (a) 139.2 (b) 13.92 (c) 0.1392 (d) 1.392
6. 6.5.5 × 21 — where does the decimal point go? (a) 1155 (b) 115.5 (c) 11.55 (d) 1.155
7. 7.8.3 × 3.5 — where does the decimal point go? (a) 2.905 (b) 29.05 (c) 0.2905 (d) 290.5
8. 8.0.16 × 3.3 — where does the decimal point go? (a) 0.0528 (b) 0.00528 (c) 5.28 (d) 0.528
9. 9.0.27 × 27 — where does the decimal point go? (a) 0.729 (b) 72.9 (c) 0.0729 (d) 7.29
10. 10.4.9 × 4 — where does the decimal point go? (a) 0.196 (b) 1.96 (c) 19.6 (d) 196
11. 11.5.7 × 3 — where does the decimal point go? (a) 171 (b) 17.1 (c) 1.71 (d) 0.171
12. 12.7.8 × 0.9 — where does the decimal point go? (a) 7.02 (b) 70.2 (c) 0.0702 (d) 0.702
13. 13.0.42 × 3.6 — where does the decimal point go? (a) 0.01512 (b) 0.1512 (c) 1.512 (d) 15.12
14. 14.0.28 × 4 — where does the decimal point go? (a) 1.12 (b) 0.0112 (c) 11.2 (d) 0.112
15. 15.3.3 × 3 — where does the decimal point go? (a) 0.99 (b) 0.099 (c) 9.9 (d) 99
16. 16.0.18 × 3.3 — where does the decimal point go? (a) 0.00594 (b) 0.0594 (c) 0.594 (d) 5.94
17. 17.2.7 × 18 — where does the decimal point go? (a) 0.486 (b) 4.86 (c) 48.6 (d) 486
18. 18.0.92 × 19 — where does the decimal point go? (a) 1.748 (b) 174.8 (c) 0.1748 (d) 17.48
19. 19.6.3 × 2.4 — where does the decimal point go? (a) 151.2 (b) 15.12 (c) 1.512 (d) 0.1512
20. 20.0.22 × 2 — where does the decimal point go? (a) 0.044 (b) 4.4 (c) 0.44 (d) 0.0044
21. 21.0.14 × 0.6 — where does the decimal point go? (a) 0.084 (b) 0.0084 (c) 0.84 (d) 0.00084
22. 22.1.8 × 0.4 — where does the decimal point go? (a) 0.72 (b) 0.0072 (c) 7.2 (d) 0.072
23. 23.8.2 × 14 — where does the decimal point go? (a) 1148 (b) 114.8 (c) 11.48 (d) 1.148
24. 24.0.76 × 38 — where does the decimal point go? (a) 28.88 (b) 288.8 (c) 2.888 (d) 0.2888
25. 25.3.4 × 0.4 — where does the decimal point go? (a) 1.36 (b) 0.136 (c) 13.6 (d) 0.0136
26. 26.0.53 × 1.7 — where does the decimal point go? (a) 0.0901 (b) 9.01 (c) 0.901 (d) 0.00901
27. 27.0.79 × 6 — where does the decimal point go? (a) 47.4 (b) 0.0474 (c) 0.474 (d) 4.74
28. 28.4.3 × 3 — where does the decimal point go? (a) 12.9 (b) 1.29 (c) 129 (d) 0.129
29. 29.6.2 × 46 — where does the decimal point go? (a) 28.52 (b) 2852 (c) 2.852 (d) 285.2
30. 30.0.46 × 28 — where does the decimal point go? (a) 0.1288 (b) 128.8 (c) 1.288 (d) 12.88
31. 31.9.6 × 6 — where does the decimal point go? (a) 576 (b) 5.76 (c) 0.576 (d) 57.6
32. 32.0.24 × 6 — where does the decimal point go? (a) 14.4 (b) 1.44 (c) 0.144 (d) 0.0144
33. 33.3.9 × 12 — where does the decimal point go? (a) 46.8 (b) 0.468 (c) 4.68 (d) 468
34. 34.0.49 × 0.2 — where does the decimal point go? (a) 0.00098 (b) 0.098 (c) 0.0098 (d) 0.98
35. 35.9.8 × 36 — where does the decimal point go? (a) 35.28 (b) 3528 (c) 352.8 (d) 3.528
36. 36.1.8 × 23 — where does the decimal point go? (a) 414 (b) 4.14 (c) 41.4 (d) 0.414
37. 37.1.9 × 24 — where does the decimal point go? (a) 456 (b) 4.56 (c) 45.6 (d) 0.456
38. 38.1.4 × 29 — where does the decimal point go? (a) 40.6 (b) 4.06 (c) 406 (d) 0.406
39. 39.9.5 × 4.1 — where does the decimal point go? (a) 3.895 (b) 38.95 (c) 0.3895 (d) 389.5
40. 40.0.38 × 0.6 — where does the decimal point go? (a) 0.0228 (b) 2.28 (c) 0.00228 (d) 0.228

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