Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 762 · 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. 1.0.38 × 28 — where does the decimal point go? (a) 0.1064 (b) 106.4 (c) 10.64 (d) 1.064
2. 2.6.1 × 35 — where does the decimal point go? (a) 21.35 (b) 213.5 (c) 2135 (d) 2.135
3. 3.0.34 × 2.8 — where does the decimal point go? (a) 0.0952 (b) 9.52 (c) 0.952 (d) 0.00952
4. 4.0.97 × 3.9 — where does the decimal point go? (a) 37.83 (b) 0.3783 (c) 0.03783 (d) 3.783
5. 5.0.42 × 3 — where does the decimal point go? (a) 0.0126 (b) 0.126 (c) 12.6 (d) 1.26
6. 6.0.77 × 45 — where does the decimal point go? (a) 346.5 (b) 34.65 (c) 0.3465 (d) 3.465
7. 7.4.3 × 0.8 — where does the decimal point go? (a) 34.4 (b) 0.344 (c) 3.44 (d) 0.0344
8. 8.9.6 × 46 — where does the decimal point go? (a) 4.416 (b) 441.6 (c) 44.16 (d) 4416
9. 9.1.6 × 3.7 — where does the decimal point go? (a) 5.92 (b) 0.592 (c) 59.2 (d) 0.0592
10. 10.4.2 × 1.8 — where does the decimal point go? (a) 0.756 (b) 0.0756 (c) 75.6 (d) 7.56
11. 11.0.23 × 0.3 — where does the decimal point go? (a) 0.00069 (b) 0.69 (c) 0.0069 (d) 0.069
12. 12.3.1 × 4 — where does the decimal point go? (a) 12.4 (b) 0.124 (c) 1.24 (d) 124
13. 13.0.15 × 0.3 — where does the decimal point go? (a) 0.00045 (b) 0.0045 (c) 0.045 (d) 0.45
14. 14.0.84 × 0.8 — where does the decimal point go? (a) 6.72 (b) 0.672 (c) 0.00672 (d) 0.0672
15. 15.5.8 × 14 — where does the decimal point go? (a) 812 (b) 81.2 (c) 0.812 (d) 8.12
16. 16.9.6 × 11 — where does the decimal point go? (a) 10.56 (b) 105.6 (c) 1056 (d) 1.056
17. 17.0.69 × 23 — where does the decimal point go? (a) 158.7 (b) 0.1587 (c) 1.587 (d) 15.87
18. 18.7.1 × 12 — where does the decimal point go? (a) 8.52 (b) 85.2 (c) 0.852 (d) 852
19. 19.0.34 × 37 — where does the decimal point go? (a) 125.8 (b) 12.58 (c) 1.258 (d) 0.1258
20. 20.9.9 × 0.6 — where does the decimal point go? (a) 0.594 (b) 5.94 (c) 0.0594 (d) 59.4
21. 21.7.1 × 0.6 — where does the decimal point go? (a) 0.426 (b) 42.6 (c) 0.0426 (d) 4.26
22. 22.4.5 × 9 — where does the decimal point go? (a) 0.405 (b) 4.05 (c) 405 (d) 40.5
23. 23.9.8 × 6 — where does the decimal point go? (a) 0.588 (b) 58.8 (c) 588 (d) 5.88
24. 24.0.22 × 36 — where does the decimal point go? (a) 0.0792 (b) 0.792 (c) 79.2 (d) 7.92
25. 25.0.33 × 7 — where does the decimal point go? (a) 2.31 (b) 0.231 (c) 23.1 (d) 0.0231
26. 26.0.14 × 49 — where does the decimal point go? (a) 0.686 (b) 6.86 (c) 0.0686 (d) 68.6
27. 27.0.77 × 4.2 — where does the decimal point go? (a) 3.234 (b) 32.34 (c) 0.03234 (d) 0.3234
28. 28.2.4 × 26 — where does the decimal point go? (a) 624 (b) 62.4 (c) 6.24 (d) 0.624
29. 29.8.1 × 1.3 — where does the decimal point go? (a) 10.53 (b) 0.1053 (c) 105.3 (d) 1.053
30. 30.7.1 × 2.5 — where does the decimal point go? (a) 1.775 (b) 177.5 (c) 17.75 (d) 0.1775
31. 31.0.34 × 2 — where does the decimal point go? (a) 6.8 (b) 0.68 (c) 0.0068 (d) 0.068
32. 32.5.2 × 0.2 — where does the decimal point go? (a) 0.104 (b) 1.04 (c) 0.0104 (d) 10.4
33. 33.4.2 × 7 — where does the decimal point go? (a) 2.94 (b) 0.294 (c) 294 (d) 29.4
34. 34.0.82 × 0.9 — where does the decimal point go? (a) 0.0738 (b) 0.00738 (c) 0.738 (d) 7.38
35. 35.0.24 × 0.7 — where does the decimal point go? (a) 0.0168 (b) 0.168 (c) 0.00168 (d) 1.68
36. 36.5.7 × 27 — where does the decimal point go? (a) 15.39 (b) 1539 (c) 153.9 (d) 1.539
37. 37.0.16 × 0.7 — where does the decimal point go? (a) 1.12 (b) 0.0112 (c) 0.112 (d) 0.00112
38. 38.6.1 × 7 — where does the decimal point go? (a) 42.7 (b) 0.427 (c) 4.27 (d) 427
39. 39.5.2 × 7 — where does the decimal point go? (a) 36.4 (b) 3.64 (c) 364 (d) 0.364
40. 40.1.3 × 9 — where does the decimal point go? (a) 1.17 (b) 11.7 (c) 117 (d) 0.117

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