Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 892 · 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. 1.9.1 × 8 — where does the decimal point go? (a) 7.28 (b) 728 (c) 0.728 (d) 72.8
2. 2.2.1 × 23 — where does the decimal point go? (a) 0.483 (b) 4.83 (c) 483 (d) 48.3
3. 3.5.9 × 43 — where does the decimal point go? (a) 2537 (b) 2.537 (c) 25.37 (d) 253.7
4. 4.0.21 × 19 — where does the decimal point go? (a) 0.0399 (b) 3.99 (c) 0.399 (d) 39.9
5. 5.6.6 × 19 — where does the decimal point go? (a) 12.54 (b) 1254 (c) 125.4 (d) 1.254
6. 6.5.2 × 7 — where does the decimal point go? (a) 0.364 (b) 36.4 (c) 3.64 (d) 364
7. 7.2.9 × 39 — where does the decimal point go? (a) 1.131 (b) 11.31 (c) 1131 (d) 113.1
8. 8.5.6 × 2.2 — where does the decimal point go? (a) 12.32 (b) 0.1232 (c) 123.2 (d) 1.232
9. 9.0.67 × 4 — where does the decimal point go? (a) 2.68 (b) 0.0268 (c) 0.268 (d) 26.8
10. 10.4.1 × 1.8 — where does the decimal point go? (a) 7.38 (b) 0.738 (c) 73.8 (d) 0.0738
11. 11.3.7 × 26 — where does the decimal point go? (a) 96.2 (b) 962 (c) 0.962 (d) 9.62
12. 12.5.3 × 3.7 — where does the decimal point go? (a) 0.1961 (b) 196.1 (c) 19.61 (d) 1.961
13. 13.6.3 × 4.8 — where does the decimal point go? (a) 30.24 (b) 3.024 (c) 302.4 (d) 0.3024
14. 14.8.1 × 0.7 — where does the decimal point go? (a) 56.7 (b) 5.67 (c) 0.567 (d) 0.0567
15. 15.3.4 × 11 — where does the decimal point go? (a) 37.4 (b) 0.374 (c) 374 (d) 3.74
16. 16.6.9 × 0.3 — where does the decimal point go? (a) 20.7 (b) 2.07 (c) 0.207 (d) 0.0207
17. 17.8.7 × 42 — where does the decimal point go? (a) 365.4 (b) 36.54 (c) 3654 (d) 3.654
18. 18.0.71 × 4 — where does the decimal point go? (a) 0.284 (b) 0.0284 (c) 2.84 (d) 28.4
19. 19.4.4 × 2.1 — where does the decimal point go? (a) 9.24 (b) 92.4 (c) 0.0924 (d) 0.924
20. 20.0.94 × 7 — where does the decimal point go? (a) 65.8 (b) 0.658 (c) 0.0658 (d) 6.58
21. 21.0.63 × 0.4 — where does the decimal point go? (a) 0.00252 (b) 0.252 (c) 2.52 (d) 0.0252
22. 22.0.44 × 3 — where does the decimal point go? (a) 13.2 (b) 1.32 (c) 0.132 (d) 0.0132
23. 23.9.1 × 7 — where does the decimal point go? (a) 6.37 (b) 63.7 (c) 637 (d) 0.637
24. 24.4.5 × 3 — where does the decimal point go? (a) 13.5 (b) 135 (c) 1.35 (d) 0.135
25. 25.7.9 × 49 — where does the decimal point go? (a) 387.1 (b) 3.871 (c) 3871 (d) 38.71
26. 26.7.9 × 9 — where does the decimal point go? (a) 7.11 (b) 711 (c) 0.711 (d) 71.1
27. 27.3.6 × 49 — where does the decimal point go? (a) 1.764 (b) 17.64 (c) 1764 (d) 176.4
28. 28.7.9 × 48 — where does the decimal point go? (a) 37.92 (b) 3792 (c) 379.2 (d) 3.792
29. 29.7.1 × 15 — where does the decimal point go? (a) 10.65 (b) 106.5 (c) 1065 (d) 1.065
30. 30.1.4 × 49 — where does the decimal point go? (a) 6.86 (b) 686 (c) 0.686 (d) 68.6
31. 31.3.6 × 0.6 — where does the decimal point go? (a) 0.216 (b) 0.0216 (c) 21.6 (d) 2.16
32. 32.2.6 × 21 — where does the decimal point go? (a) 5.46 (b) 546 (c) 0.546 (d) 54.6
33. 33.0.99 × 4 — where does the decimal point go? (a) 0.0396 (b) 0.396 (c) 39.6 (d) 3.96
34. 34.4.2 × 2 — where does the decimal point go? (a) 0.084 (b) 8.4 (c) 84 (d) 0.84
35. 35.7.3 × 31 — where does the decimal point go? (a) 22.63 (b) 2.263 (c) 226.3 (d) 2263
36. 36.0.53 × 27 — where does the decimal point go? (a) 1.431 (b) 143.1 (c) 0.1431 (d) 14.31
37. 37.3.7 × 5 — where does the decimal point go? (a) 18.5 (b) 0.185 (c) 1.85 (d) 185
38. 38.7.3 × 0.2 — where does the decimal point go? (a) 0.146 (b) 14.6 (c) 0.0146 (d) 1.46
39. 39.4.3 × 2 — where does the decimal point go? (a) 8.6 (b) 86 (c) 0.86 (d) 0.086
40. 40.0.71 × 0.4 — where does the decimal point go? (a) 0.284 (b) 0.00284 (c) 0.0284 (d) 2.84

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