Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 907 · 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. 1.8.3 × 2 — where does the decimal point go? (a) 1.66 (b) 16.6 (c) 0.166 (d) 166
2. 2.6.1 × 6 — where does the decimal point go? (a) 366 (b) 0.366 (c) 36.6 (d) 3.66
3. 3.0.81 × 3 — where does the decimal point go? (a) 24.3 (b) 2.43 (c) 0.243 (d) 0.0243
4. 4.0.83 × 14 — where does the decimal point go? (a) 116.2 (b) 0.1162 (c) 11.62 (d) 1.162
5. 5.5.2 × 2.4 — where does the decimal point go? (a) 12.48 (b) 0.1248 (c) 124.8 (d) 1.248
6. 6.0.16 × 2.2 — where does the decimal point go? (a) 0.00352 (b) 3.52 (c) 0.352 (d) 0.0352
7. 7.0.43 × 24 — where does the decimal point go? (a) 103.2 (b) 0.1032 (c) 10.32 (d) 1.032
8. 8.4.8 × 0.4 — where does the decimal point go? (a) 19.2 (b) 1.92 (c) 0.192 (d) 0.0192
9. 9.5.1 × 8 — where does the decimal point go? (a) 408 (b) 40.8 (c) 0.408 (d) 4.08
10. 10.6.6 × 22 — where does the decimal point go? (a) 1.452 (b) 145.2 (c) 1452 (d) 14.52
11. 11.4.2 × 18 — where does the decimal point go? (a) 0.756 (b) 756 (c) 7.56 (d) 75.6
12. 12.9.9 × 2.5 — where does the decimal point go? (a) 247.5 (b) 24.75 (c) 0.2475 (d) 2.475
13. 13.0.74 × 2.4 — where does the decimal point go? (a) 1.776 (b) 17.76 (c) 0.01776 (d) 0.1776
14. 14.0.58 × 42 — where does the decimal point go? (a) 2.436 (b) 0.2436 (c) 243.6 (d) 24.36
15. 15.8.6 × 4 — where does the decimal point go? (a) 0.344 (b) 344 (c) 3.44 (d) 34.4
16. 16.0.26 × 43 — where does the decimal point go? (a) 1.118 (b) 11.18 (c) 111.8 (d) 0.1118
17. 17.8.7 × 0.3 — where does the decimal point go? (a) 0.261 (b) 26.1 (c) 0.0261 (d) 2.61
18. 18.0.63 × 1.4 — where does the decimal point go? (a) 0.0882 (b) 8.82 (c) 0.00882 (d) 0.882
19. 19.0.64 × 0.8 — where does the decimal point go? (a) 0.0512 (b) 5.12 (c) 0.512 (d) 0.00512
20. 20.3.8 × 0.9 — where does the decimal point go? (a) 0.342 (b) 3.42 (c) 0.0342 (d) 34.2
21. 21.3.4 × 0.3 — where does the decimal point go? (a) 1.02 (b) 10.2 (c) 0.102 (d) 0.0102
22. 22.0.86 × 24 — where does the decimal point go? (a) 206.4 (b) 0.2064 (c) 20.64 (d) 2.064
23. 23.0.14 × 0.4 — where does the decimal point go? (a) 0.056 (b) 0.00056 (c) 0.56 (d) 0.0056
24. 24.3.4 × 0.2 — where does the decimal point go? (a) 0.0068 (b) 0.68 (c) 0.068 (d) 6.8
25. 25.0.76 × 8 — where does the decimal point go? (a) 0.0608 (b) 0.608 (c) 60.8 (d) 6.08
26. 26.4.2 × 4.8 — where does the decimal point go? (a) 0.2016 (b) 2.016 (c) 20.16 (d) 201.6
27. 27.3.7 × 0.6 — where does the decimal point go? (a) 22.2 (b) 0.222 (c) 0.0222 (d) 2.22
28. 28.8.2 × 8 — where does the decimal point go? (a) 6.56 (b) 0.656 (c) 65.6 (d) 656
29. 29.6.9 × 11 — where does the decimal point go? (a) 0.759 (b) 759 (c) 75.9 (d) 7.59
30. 30.1.7 × 2 — where does the decimal point go? (a) 3.4 (b) 0.34 (c) 34 (d) 0.034
31. 31.0.39 × 0.8 — where does the decimal point go? (a) 0.00312 (b) 0.312 (c) 3.12 (d) 0.0312
32. 32.0.82 × 3 — where does the decimal point go? (a) 2.46 (b) 24.6 (c) 0.0246 (d) 0.246
33. 33.8.5 × 7 — where does the decimal point go? (a) 0.595 (b) 5.95 (c) 59.5 (d) 595
34. 34.3.7 × 6 — where does the decimal point go? (a) 0.222 (b) 222 (c) 2.22 (d) 22.2
35. 35.0.36 × 2.9 — where does the decimal point go? (a) 0.01044 (b) 1.044 (c) 10.44 (d) 0.1044
36. 36.7.8 × 41 — where does the decimal point go? (a) 31.98 (b) 3.198 (c) 3198 (d) 319.8
37. 37.0.49 × 1.6 — where does the decimal point go? (a) 0.00784 (b) 0.0784 (c) 7.84 (d) 0.784
38. 38.0.15 × 9 — where does the decimal point go? (a) 1.35 (b) 13.5 (c) 0.0135 (d) 0.135
39. 39.9.4 × 2 — where does the decimal point go? (a) 0.188 (b) 188 (c) 18.8 (d) 1.88
40. 40.0.35 × 0.7 — where does the decimal point go? (a) 0.245 (b) 0.0245 (c) 0.00245 (d) 2.45

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