Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 681 · 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. 1.2.2 × 3 — where does the decimal point go? (a) 0.66 (b) 6.6 (c) 0.066 (d) 66
2. 2.4.6 × 42 — where does the decimal point go? (a) 19.32 (b) 193.2 (c) 1.932 (d) 1932
3. 3.0.73 × 41 — where does the decimal point go? (a) 299.3 (b) 2.993 (c) 0.2993 (d) 29.93
4. 4.3.4 × 6 — where does the decimal point go? (a) 20.4 (b) 204 (c) 0.204 (d) 2.04
5. 5.1.8 × 3 — where does the decimal point go? (a) 0.054 (b) 0.54 (c) 5.4 (d) 54
6. 6.4.3 × 0.8 — where does the decimal point go? (a) 0.344 (b) 0.0344 (c) 3.44 (d) 34.4
7. 7.0.91 × 0.5 — where does the decimal point go? (a) 0.455 (b) 0.00455 (c) 0.0455 (d) 4.55
8. 8.0.68 × 41 — where does the decimal point go? (a) 2.788 (b) 278.8 (c) 27.88 (d) 0.2788
9. 9.0.29 × 28 — where does the decimal point go? (a) 0.812 (b) 0.0812 (c) 8.12 (d) 81.2
10. 10.1.7 × 43 — where does the decimal point go? (a) 0.731 (b) 731 (c) 7.31 (d) 73.1
11. 11.3.2 × 8 — where does the decimal point go? (a) 2.56 (b) 0.256 (c) 25.6 (d) 256
12. 12.6.7 × 21 — where does the decimal point go? (a) 140.7 (b) 1.407 (c) 14.07 (d) 1407
13. 13.0.71 × 9 — where does the decimal point go? (a) 0.0639 (b) 63.9 (c) 6.39 (d) 0.639
14. 14.2.7 × 2.8 — where does the decimal point go? (a) 0.0756 (b) 7.56 (c) 0.756 (d) 75.6
15. 15.0.83 × 32 — where does the decimal point go? (a) 2.656 (b) 26.56 (c) 265.6 (d) 0.2656
16. 16.0.76 × 4 — where does the decimal point go? (a) 30.4 (b) 0.304 (c) 3.04 (d) 0.0304
17. 17.2.8 × 2.3 — where does the decimal point go? (a) 0.644 (b) 64.4 (c) 6.44 (d) 0.0644
18. 18.0.76 × 2.4 — where does the decimal point go? (a) 1.824 (b) 0.1824 (c) 0.01824 (d) 18.24
19. 19.1.7 × 25 — where does the decimal point go? (a) 0.425 (b) 4.25 (c) 425 (d) 42.5
20. 20.7.7 × 9 — where does the decimal point go? (a) 69.3 (b) 693 (c) 6.93 (d) 0.693
21. 21.7.8 × 2.7 — where does the decimal point go? (a) 2.106 (b) 210.6 (c) 0.2106 (d) 21.06
22. 22.9.9 × 34 — where does the decimal point go? (a) 336.6 (b) 33.66 (c) 3366 (d) 3.366
23. 23.2.2 × 17 — where does the decimal point go? (a) 0.374 (b) 374 (c) 37.4 (d) 3.74
24. 24.0.12 × 4 — where does the decimal point go? (a) 4.8 (b) 0.048 (c) 0.0048 (d) 0.48
25. 25.2.2 × 0.6 — where does the decimal point go? (a) 13.2 (b) 1.32 (c) 0.132 (d) 0.0132
26. 26.0.45 × 7 — where does the decimal point go? (a) 31.5 (b) 3.15 (c) 0.0315 (d) 0.315
27. 27.4.1 × 3 — where does the decimal point go? (a) 1.23 (b) 0.123 (c) 12.3 (d) 123
28. 28.0.76 × 2.6 — where does the decimal point go? (a) 19.76 (b) 0.01976 (c) 0.1976 (d) 1.976
29. 29.0.39 × 0.9 — where does the decimal point go? (a) 0.351 (b) 0.0351 (c) 0.00351 (d) 3.51
30. 30.9.7 × 5 — where does the decimal point go? (a) 48.5 (b) 4.85 (c) 0.485 (d) 485
31. 31.0.32 × 0.7 — where does the decimal point go? (a) 0.00224 (b) 2.24 (c) 0.0224 (d) 0.224
32. 32.1.9 × 0.9 — where does the decimal point go? (a) 0.171 (b) 1.71 (c) 17.1 (d) 0.0171
33. 33.0.53 × 4 — where does the decimal point go? (a) 2.12 (b) 21.2 (c) 0.0212 (d) 0.212
34. 34.6.6 × 2.3 — where does the decimal point go? (a) 15.18 (b) 1.518 (c) 151.8 (d) 0.1518
35. 35.0.17 × 23 — where does the decimal point go? (a) 0.0391 (b) 0.391 (c) 3.91 (d) 39.1
36. 36.9.6 × 9 — where does the decimal point go? (a) 864 (b) 0.864 (c) 8.64 (d) 86.4
37. 37.0.23 × 4.2 — where does the decimal point go? (a) 0.0966 (b) 0.966 (c) 0.00966 (d) 9.66
38. 38.7.1 × 17 — where does the decimal point go? (a) 1.207 (b) 12.07 (c) 1207 (d) 120.7
39. 39.7.3 × 31 — where does the decimal point go? (a) 2.263 (b) 22.63 (c) 2263 (d) 226.3
40. 40.0.61 × 29 — where does the decimal point go? (a) 0.1769 (b) 17.69 (c) 1.769 (d) 176.9

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