Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 747 · 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. 1.0.47 × 34 — where does the decimal point go? (a) 1.598 (b) 0.1598 (c) 159.8 (d) 15.98
2. 2.0.22 × 9 — where does the decimal point go? (a) 0.198 (b) 19.8 (c) 0.0198 (d) 1.98
3. 3.7.7 × 3 — where does the decimal point go? (a) 0.231 (b) 23.1 (c) 231 (d) 2.31
4. 4.0.43 × 8 — where does the decimal point go? (a) 0.0344 (b) 34.4 (c) 3.44 (d) 0.344
5. 5.6.6 × 3.1 — where does the decimal point go? (a) 2.046 (b) 20.46 (c) 204.6 (d) 0.2046
6. 6.0.57 × 2.8 — where does the decimal point go? (a) 1.596 (b) 15.96 (c) 0.01596 (d) 0.1596
7. 7.0.43 × 32 — where does the decimal point go? (a) 13.76 (b) 1.376 (c) 0.1376 (d) 137.6
8. 8.5.9 × 4 — where does the decimal point go? (a) 236 (b) 23.6 (c) 2.36 (d) 0.236
9. 9.4.4 × 0.3 — where does the decimal point go? (a) 1.32 (b) 0.0132 (c) 0.132 (d) 13.2
10. 10.0.65 × 3.5 — where does the decimal point go? (a) 2.275 (b) 0.02275 (c) 0.2275 (d) 22.75
11. 11.9.4 × 0.2 — where does the decimal point go? (a) 0.0188 (b) 0.188 (c) 18.8 (d) 1.88
12. 12.0.17 × 2.5 — where does the decimal point go? (a) 0.425 (b) 4.25 (c) 0.00425 (d) 0.0425
13. 13.0.63 × 47 — where does the decimal point go? (a) 296.1 (b) 0.2961 (c) 29.61 (d) 2.961
14. 14.0.19 × 24 — where does the decimal point go? (a) 45.6 (b) 4.56 (c) 0.0456 (d) 0.456
15. 15.4.6 × 0.8 — where does the decimal point go? (a) 0.0368 (b) 36.8 (c) 0.368 (d) 3.68
16. 16.0.67 × 4.1 — where does the decimal point go? (a) 0.2747 (b) 27.47 (c) 0.02747 (d) 2.747
17. 17.0.62 × 8 — where does the decimal point go? (a) 0.0496 (b) 4.96 (c) 0.496 (d) 49.6
18. 18.6.9 × 0.6 — where does the decimal point go? (a) 4.14 (b) 0.0414 (c) 41.4 (d) 0.414
19. 19.0.31 × 9 — where does the decimal point go? (a) 2.79 (b) 27.9 (c) 0.0279 (d) 0.279
20. 20.0.97 × 35 — where does the decimal point go? (a) 3.395 (b) 33.95 (c) 0.3395 (d) 339.5
21. 21.0.79 × 0.9 — where does the decimal point go? (a) 7.11 (b) 0.00711 (c) 0.0711 (d) 0.711
22. 22.0.56 × 0.3 — where does the decimal point go? (a) 0.0168 (b) 0.00168 (c) 1.68 (d) 0.168
23. 23.0.33 × 27 — where does the decimal point go? (a) 0.891 (b) 0.0891 (c) 89.1 (d) 8.91
24. 24.0.82 × 2.3 — where does the decimal point go? (a) 0.01886 (b) 0.1886 (c) 1.886 (d) 18.86
25. 25.0.73 × 1.5 — where does the decimal point go? (a) 1.095 (b) 0.1095 (c) 0.01095 (d) 10.95
26. 26.6.6 × 14 — where does the decimal point go? (a) 92.4 (b) 924 (c) 9.24 (d) 0.924
27. 27.9.8 × 8 — where does the decimal point go? (a) 7.84 (b) 78.4 (c) 784 (d) 0.784
28. 28.0.49 × 33 — where does the decimal point go? (a) 0.1617 (b) 1.617 (c) 16.17 (d) 161.7
29. 29.3.4 × 4.1 — where does the decimal point go? (a) 13.94 (b) 0.1394 (c) 1.394 (d) 139.4
30. 30.9.2 × 0.2 — where does the decimal point go? (a) 1.84 (b) 0.184 (c) 0.0184 (d) 18.4
31. 31.1.3 × 4.7 — where does the decimal point go? (a) 6.11 (b) 61.1 (c) 0.611 (d) 0.0611
32. 32.0.96 × 3 — where does the decimal point go? (a) 0.0288 (b) 28.8 (c) 2.88 (d) 0.288
33. 33.0.87 × 0.6 — where does the decimal point go? (a) 0.00522 (b) 0.0522 (c) 5.22 (d) 0.522
34. 34.6.7 × 9 — where does the decimal point go? (a) 0.603 (b) 60.3 (c) 603 (d) 6.03
35. 35.0.28 × 17 — where does the decimal point go? (a) 0.476 (b) 0.0476 (c) 4.76 (d) 47.6
36. 36.5.6 × 14 — where does the decimal point go? (a) 784 (b) 7.84 (c) 78.4 (d) 0.784
37. 37.1.6 × 28 — where does the decimal point go? (a) 0.448 (b) 44.8 (c) 448 (d) 4.48
38. 38.2.1 × 6 — where does the decimal point go? (a) 126 (b) 0.126 (c) 12.6 (d) 1.26
39. 39.6.8 × 7 — where does the decimal point go? (a) 4.76 (b) 476 (c) 47.6 (d) 0.476
40. 40.6.9 × 3 — where does the decimal point go? (a) 20.7 (b) 2.07 (c) 0.207 (d) 207

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