Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 839 · 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. 1.2.7 × 46 — where does the decimal point go? (a) 1.242 (b) 12.42 (c) 1242 (d) 124.2
2. 2.5.7 × 3.3 — where does the decimal point go? (a) 1.881 (b) 188.1 (c) 18.81 (d) 0.1881
3. 3.0.36 × 7 — where does the decimal point go? (a) 0.0252 (b) 25.2 (c) 0.252 (d) 2.52
4. 4.9.3 × 4.1 — where does the decimal point go? (a) 0.3813 (b) 38.13 (c) 381.3 (d) 3.813
5. 5.0.74 × 7 — where does the decimal point go? (a) 0.518 (b) 5.18 (c) 0.0518 (d) 51.8
6. 6.1.4 × 0.7 — where does the decimal point go? (a) 0.098 (b) 9.8 (c) 0.0098 (d) 0.98
7. 7.0.52 × 2.8 — where does the decimal point go? (a) 0.01456 (b) 1.456 (c) 14.56 (d) 0.1456
8. 8.2.8 × 28 — where does the decimal point go? (a) 78.4 (b) 0.784 (c) 7.84 (d) 784
9. 9.0.12 × 2.6 — where does the decimal point go? (a) 0.00312 (b) 0.312 (c) 3.12 (d) 0.0312
10. 10.0.29 × 33 — where does the decimal point go? (a) 95.7 (b) 9.57 (c) 0.957 (d) 0.0957
11. 11.3.5 × 7 — where does the decimal point go? (a) 245 (b) 24.5 (c) 0.245 (d) 2.45
12. 12.0.51 × 0.2 — where does the decimal point go? (a) 0.00102 (b) 0.102 (c) 0.0102 (d) 1.02
13. 13.0.64 × 38 — where does the decimal point go? (a) 2.432 (b) 0.2432 (c) 243.2 (d) 24.32
14. 14.3.4 × 2.6 — where does the decimal point go? (a) 8.84 (b) 0.0884 (c) 0.884 (d) 88.4
15. 15.8.9 × 3 — where does the decimal point go? (a) 267 (b) 2.67 (c) 0.267 (d) 26.7
16. 16.8.7 × 31 — where does the decimal point go? (a) 26.97 (b) 2697 (c) 269.7 (d) 2.697
17. 17.0.19 × 2 — where does the decimal point go? (a) 0.0038 (b) 0.038 (c) 3.8 (d) 0.38
18. 18.6.5 × 41 — where does the decimal point go? (a) 2.665 (b) 26.65 (c) 2665 (d) 266.5
19. 19.0.79 × 3.9 — where does the decimal point go? (a) 0.03081 (b) 0.3081 (c) 30.81 (d) 3.081
20. 20.0.63 × 2.5 — where does the decimal point go? (a) 1.575 (b) 0.1575 (c) 15.75 (d) 0.01575
21. 21.0.48 × 6 — where does the decimal point go? (a) 0.288 (b) 28.8 (c) 0.0288 (d) 2.88
22. 22.2.9 × 13 — where does the decimal point go? (a) 3.77 (b) 0.377 (c) 377 (d) 37.7
23. 23.9.8 × 42 — where does the decimal point go? (a) 4.116 (b) 41.16 (c) 411.6 (d) 4116
24. 24.5.8 × 0.2 — where does the decimal point go? (a) 0.116 (b) 11.6 (c) 0.0116 (d) 1.16
25. 25.5.1 × 4.7 — where does the decimal point go? (a) 2.397 (b) 0.2397 (c) 239.7 (d) 23.97
26. 26.0.21 × 0.6 — where does the decimal point go? (a) 0.0126 (b) 0.126 (c) 0.00126 (d) 1.26
27. 27.8.4 × 0.9 — where does the decimal point go? (a) 0.756 (b) 7.56 (c) 0.0756 (d) 75.6
28. 28.0.89 × 3 — where does the decimal point go? (a) 2.67 (b) 0.0267 (c) 0.267 (d) 26.7
29. 29.0.61 × 2.3 — where does the decimal point go? (a) 1.403 (b) 14.03 (c) 0.01403 (d) 0.1403
30. 30.4.8 × 3.9 — where does the decimal point go? (a) 1.872 (b) 18.72 (c) 0.1872 (d) 187.2
31. 31.6.8 × 39 — where does the decimal point go? (a) 26.52 (b) 2652 (c) 2.652 (d) 265.2
32. 32.0.46 × 0.3 — where does the decimal point go? (a) 0.0138 (b) 0.00138 (c) 1.38 (d) 0.138
33. 33.0.47 × 4 — where does the decimal point go? (a) 0.188 (b) 0.0188 (c) 1.88 (d) 18.8
34. 34.1.5 × 0.9 — where does the decimal point go? (a) 0.0135 (b) 0.135 (c) 13.5 (d) 1.35
35. 35.0.24 × 18 — where does the decimal point go? (a) 43.2 (b) 4.32 (c) 0.432 (d) 0.0432
36. 36.0.61 × 4 — where does the decimal point go? (a) 2.44 (b) 24.4 (c) 0.0244 (d) 0.244
37. 37.6.6 × 9 — where does the decimal point go? (a) 0.594 (b) 59.4 (c) 5.94 (d) 594
38. 38.0.16 × 0.2 — where does the decimal point go? (a) 0.032 (b) 0.0032 (c) 0.00032 (d) 0.32
39. 39.2.2 × 4 — where does the decimal point go? (a) 0.88 (b) 0.088 (c) 88 (d) 8.8
40. 40.0.14 × 47 — where does the decimal point go? (a) 65.8 (b) 0.0658 (c) 6.58 (d) 0.658

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