Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 624 · 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. 1.0.99 × 5 — where does the decimal point go? (a) 0.495 (b) 0.0495 (c) 49.5 (d) 4.95
2. 2.8.4 × 4.7 — where does the decimal point go? (a) 39.48 (b) 3.948 (c) 394.8 (d) 0.3948
3. 3.5.7 × 9 — where does the decimal point go? (a) 0.513 (b) 513 (c) 5.13 (d) 51.3
4. 4.6.6 × 4.2 — where does the decimal point go? (a) 277.2 (b) 27.72 (c) 2.772 (d) 0.2772
5. 5.0.94 × 0.9 — where does the decimal point go? (a) 0.00846 (b) 0.846 (c) 0.0846 (d) 8.46
6. 6.0.96 × 0.9 — where does the decimal point go? (a) 8.64 (b) 0.00864 (c) 0.0864 (d) 0.864
7. 7.6.2 × 1.9 — where does the decimal point go? (a) 1.178 (b) 117.8 (c) 11.78 (d) 0.1178
8. 8.9.3 × 2.9 — where does the decimal point go? (a) 0.2697 (b) 2.697 (c) 269.7 (d) 26.97
9. 9.1.3 × 13 — where does the decimal point go? (a) 1.69 (b) 169 (c) 0.169 (d) 16.9
10. 10.0.67 × 0.5 — where does the decimal point go? (a) 3.35 (b) 0.0335 (c) 0.335 (d) 0.00335
11. 11.0.99 × 3.7 — where does the decimal point go? (a) 36.63 (b) 0.3663 (c) 3.663 (d) 0.03663
12. 12.0.45 × 1.3 — where does the decimal point go? (a) 5.85 (b) 0.585 (c) 0.0585 (d) 0.00585
13. 13.8.7 × 8 — where does the decimal point go? (a) 6.96 (b) 696 (c) 69.6 (d) 0.696
14. 14.0.16 × 1.1 — where does the decimal point go? (a) 0.176 (b) 0.00176 (c) 0.0176 (d) 1.76
15. 15.0.39 × 33 — where does the decimal point go? (a) 1.287 (b) 12.87 (c) 0.1287 (d) 128.7
16. 16.7.9 × 0.2 — where does the decimal point go? (a) 0.158 (b) 15.8 (c) 0.0158 (d) 1.58
17. 17.0.88 × 0.8 — where does the decimal point go? (a) 0.704 (b) 0.0704 (c) 7.04 (d) 0.00704
18. 18.0.96 × 6 — where does the decimal point go? (a) 5.76 (b) 0.576 (c) 57.6 (d) 0.0576
19. 19.6.6 × 0.6 — where does the decimal point go? (a) 39.6 (b) 0.396 (c) 3.96 (d) 0.0396
20. 20.0.59 × 0.9 — where does the decimal point go? (a) 0.0531 (b) 0.00531 (c) 5.31 (d) 0.531
21. 21.0.99 × 0.6 — where does the decimal point go? (a) 0.594 (b) 5.94 (c) 0.00594 (d) 0.0594
22. 22.1.6 × 3.1 — where does the decimal point go? (a) 0.496 (b) 0.0496 (c) 4.96 (d) 49.6
23. 23.0.54 × 4 — where does the decimal point go? (a) 21.6 (b) 0.0216 (c) 0.216 (d) 2.16
24. 24.3.1 × 8 — where does the decimal point go? (a) 248 (b) 0.248 (c) 2.48 (d) 24.8
25. 25.2.9 × 0.4 — where does the decimal point go? (a) 11.6 (b) 1.16 (c) 0.0116 (d) 0.116
26. 26.3.3 × 3 — where does the decimal point go? (a) 9.9 (b) 0.099 (c) 99 (d) 0.99
27. 27.0.21 × 4.9 — where does the decimal point go? (a) 0.1029 (b) 10.29 (c) 1.029 (d) 0.01029
28. 28.0.47 × 0.9 — where does the decimal point go? (a) 0.00423 (b) 4.23 (c) 0.0423 (d) 0.423
29. 29.0.82 × 0.8 — where does the decimal point go? (a) 0.0656 (b) 6.56 (c) 0.656 (d) 0.00656
30. 30.0.36 × 12 — where does the decimal point go? (a) 4.32 (b) 43.2 (c) 0.432 (d) 0.0432
31. 31.0.85 × 29 — where does the decimal point go? (a) 24.65 (b) 0.2465 (c) 2.465 (d) 246.5
32. 32.4.7 × 29 — where does the decimal point go? (a) 136.3 (b) 1.363 (c) 13.63 (d) 1363
33. 33.9.3 × 4 — where does the decimal point go? (a) 3.72 (b) 37.2 (c) 0.372 (d) 372
34. 34.0.86 × 0.6 — where does the decimal point go? (a) 5.16 (b) 0.0516 (c) 0.00516 (d) 0.516
35. 35.3.2 × 4.2 — where does the decimal point go? (a) 0.1344 (b) 134.4 (c) 1.344 (d) 13.44
36. 36.0.26 × 22 — where does the decimal point go? (a) 0.572 (b) 0.0572 (c) 57.2 (d) 5.72
37. 37.0.19 × 3.8 — where does the decimal point go? (a) 0.00722 (b) 0.722 (c) 0.0722 (d) 7.22
38. 38.2.6 × 1.3 — where does the decimal point go? (a) 0.0338 (b) 3.38 (c) 0.338 (d) 33.8
39. 39.0.63 × 0.2 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 0.00126 (d) 0.126
40. 40.0.87 × 21 — where does the decimal point go? (a) 0.1827 (b) 18.27 (c) 182.7 (d) 1.827

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