Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 519 · 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 × 1.9 — where does the decimal point go? (a) 1.881 (b) 18.81 (c) 0.1881 (d) 0.01881
2. 2.0.61 × 1.6 — where does the decimal point go? (a) 0.00976 (b) 9.76 (c) 0.0976 (d) 0.976
3. 3.7.2 × 0.9 — where does the decimal point go? (a) 6.48 (b) 0.0648 (c) 0.648 (d) 64.8
4. 4.0.14 × 0.2 — where does the decimal point go? (a) 0.00028 (b) 0.0028 (c) 0.028 (d) 0.28
5. 5.1.9 × 6 — where does the decimal point go? (a) 1.14 (b) 11.4 (c) 114 (d) 0.114
6. 6.0.87 × 5 — where does the decimal point go? (a) 43.5 (b) 0.0435 (c) 0.435 (d) 4.35
7. 7.2.1 × 9 — where does the decimal point go? (a) 1.89 (b) 189 (c) 0.189 (d) 18.9
8. 8.0.56 × 8 — where does the decimal point go? (a) 0.448 (b) 44.8 (c) 0.0448 (d) 4.48
9. 9.5.3 × 0.3 — where does the decimal point go? (a) 1.59 (b) 0.0159 (c) 15.9 (d) 0.159
10. 10.2.3 × 1.6 — where does the decimal point go? (a) 3.68 (b) 0.368 (c) 36.8 (d) 0.0368
11. 11.0.99 × 0.8 — where does the decimal point go? (a) 0.00792 (b) 0.792 (c) 0.0792 (d) 7.92
12. 12.2.1 × 0.8 — where does the decimal point go? (a) 1.68 (b) 16.8 (c) 0.0168 (d) 0.168
13. 13.3.4 × 44 — where does the decimal point go? (a) 149.6 (b) 1496 (c) 14.96 (d) 1.496
14. 14.0.99 × 3 — where does the decimal point go? (a) 2.97 (b) 0.297 (c) 0.0297 (d) 29.7
15. 15.2.6 × 3.9 — where does the decimal point go? (a) 10.14 (b) 101.4 (c) 1.014 (d) 0.1014
16. 16.0.71 × 2 — where does the decimal point go? (a) 14.2 (b) 0.142 (c) 0.0142 (d) 1.42
17. 17.1.4 × 3 — where does the decimal point go? (a) 0.042 (b) 0.42 (c) 42 (d) 4.2
18. 18.1.2 × 6 — where does the decimal point go? (a) 72 (b) 0.072 (c) 0.72 (d) 7.2
19. 19.4.6 × 0.6 — where does the decimal point go? (a) 27.6 (b) 0.0276 (c) 0.276 (d) 2.76
20. 20.0.37 × 32 — where does the decimal point go? (a) 0.1184 (b) 11.84 (c) 118.4 (d) 1.184
21. 21.8.9 × 0.8 — where does the decimal point go? (a) 7.12 (b) 71.2 (c) 0.0712 (d) 0.712
22. 22.0.61 × 4.6 — where does the decimal point go? (a) 2.806 (b) 0.02806 (c) 28.06 (d) 0.2806
23. 23.0.77 × 0.6 — where does the decimal point go? (a) 0.0462 (b) 0.462 (c) 0.00462 (d) 4.62
24. 24.4.6 × 44 — where does the decimal point go? (a) 202.4 (b) 2.024 (c) 2024 (d) 20.24
25. 25.4.2 × 2 — where does the decimal point go? (a) 0.084 (b) 84 (c) 8.4 (d) 0.84
26. 26.0.77 × 48 — where does the decimal point go? (a) 0.3696 (b) 36.96 (c) 369.6 (d) 3.696
27. 27.0.35 × 1.1 — where does the decimal point go? (a) 0.00385 (b) 0.0385 (c) 0.385 (d) 3.85
28. 28.9.8 × 4.2 — where does the decimal point go? (a) 0.4116 (b) 4.116 (c) 411.6 (d) 41.16
29. 29.0.93 × 0.2 — where does the decimal point go? (a) 0.0186 (b) 0.00186 (c) 1.86 (d) 0.186
30. 30.0.16 × 0.7 — where does the decimal point go? (a) 0.00112 (b) 1.12 (c) 0.0112 (d) 0.112
31. 31.0.12 × 1.9 — where does the decimal point go? (a) 0.0228 (b) 2.28 (c) 0.228 (d) 0.00228
32. 32.3.3 × 0.8 — where does the decimal point go? (a) 0.0264 (b) 0.264 (c) 26.4 (d) 2.64
33. 33.1.7 × 4 — where does the decimal point go? (a) 68 (b) 0.068 (c) 0.68 (d) 6.8
34. 34.6.2 × 0.4 — where does the decimal point go? (a) 0.248 (b) 0.0248 (c) 2.48 (d) 24.8
35. 35.0.91 × 0.5 — where does the decimal point go? (a) 4.55 (b) 0.00455 (c) 0.0455 (d) 0.455
36. 36.7.9 × 0.5 — where does the decimal point go? (a) 0.395 (b) 3.95 (c) 39.5 (d) 0.0395
37. 37.0.79 × 15 — where does the decimal point go? (a) 0.1185 (b) 1.185 (c) 11.85 (d) 118.5
38. 38.0.69 × 13 — where does the decimal point go? (a) 0.0897 (b) 89.7 (c) 8.97 (d) 0.897
39. 39.0.28 × 4 — where does the decimal point go? (a) 0.0112 (b) 0.112 (c) 11.2 (d) 1.12
40. 40.2.3 × 24 — where does the decimal point go? (a) 5.52 (b) 55.2 (c) 0.552 (d) 552

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