Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 707 · 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. 1.4.7 × 0.2 — where does the decimal point go? (a) 0.094 (b) 9.4 (c) 0.94 (d) 0.0094
2. 2.5.3 × 0.6 — where does the decimal point go? (a) 3.18 (b) 0.318 (c) 31.8 (d) 0.0318
3. 3.7.6 × 3 — where does the decimal point go? (a) 2.28 (b) 22.8 (c) 0.228 (d) 228
4. 4.0.92 × 3.8 — where does the decimal point go? (a) 34.96 (b) 0.03496 (c) 3.496 (d) 0.3496
5. 5.0.76 × 13 — where does the decimal point go? (a) 0.988 (b) 9.88 (c) 0.0988 (d) 98.8
6. 6.5.4 × 3 — where does the decimal point go? (a) 1.62 (b) 16.2 (c) 162 (d) 0.162
7. 7.8.9 × 33 — where does the decimal point go? (a) 29.37 (b) 2937 (c) 2.937 (d) 293.7
8. 8.3.2 × 0.2 — where does the decimal point go? (a) 0.64 (b) 0.064 (c) 6.4 (d) 0.0064
9. 9.2.7 × 7 — where does the decimal point go? (a) 0.189 (b) 189 (c) 18.9 (d) 1.89
10. 10.0.16 × 33 — where does the decimal point go? (a) 0.0528 (b) 52.8 (c) 5.28 (d) 0.528
11. 11.3.3 × 46 — where does the decimal point go? (a) 1518 (b) 15.18 (c) 1.518 (d) 151.8
12. 12.0.79 × 0.8 — where does the decimal point go? (a) 0.632 (b) 0.00632 (c) 6.32 (d) 0.0632
13. 13.4.5 × 0.3 — where does the decimal point go? (a) 0.0135 (b) 0.135 (c) 1.35 (d) 13.5
14. 14.5.9 × 7 — where does the decimal point go? (a) 0.413 (b) 41.3 (c) 413 (d) 4.13
15. 15.5.4 × 38 — where does the decimal point go? (a) 2052 (b) 2.052 (c) 205.2 (d) 20.52
16. 16.1.2 × 48 — where does the decimal point go? (a) 576 (b) 5.76 (c) 57.6 (d) 0.576
17. 17.0.92 × 0.4 — where does the decimal point go? (a) 0.00368 (b) 0.0368 (c) 3.68 (d) 0.368
18. 18.0.42 × 9 — where does the decimal point go? (a) 0.0378 (b) 3.78 (c) 37.8 (d) 0.378
19. 19.2.8 × 0.3 — where does the decimal point go? (a) 0.84 (b) 0.0084 (c) 0.084 (d) 8.4
20. 20.7.1 × 7 — where does the decimal point go? (a) 4.97 (b) 497 (c) 49.7 (d) 0.497
21. 21.0.12 × 3 — where does the decimal point go? (a) 0.36 (b) 3.6 (c) 0.036 (d) 0.0036
22. 22.2.1 × 4.2 — where does the decimal point go? (a) 8.82 (b) 0.0882 (c) 0.882 (d) 88.2
23. 23.7.8 × 1.6 — where does the decimal point go? (a) 12.48 (b) 124.8 (c) 0.1248 (d) 1.248
24. 24.0.66 × 0.7 — where does the decimal point go? (a) 0.462 (b) 0.00462 (c) 0.0462 (d) 4.62
25. 25.1.3 × 4.5 — where does the decimal point go? (a) 0.585 (b) 58.5 (c) 0.0585 (d) 5.85
26. 26.0.63 × 3 — where does the decimal point go? (a) 0.189 (b) 0.0189 (c) 18.9 (d) 1.89
27. 27.5.9 × 1.7 — where does the decimal point go? (a) 0.1003 (b) 100.3 (c) 10.03 (d) 1.003
28. 28.9.7 × 14 — where does the decimal point go? (a) 1.358 (b) 135.8 (c) 1358 (d) 13.58
29. 29.0.78 × 1.6 — where does the decimal point go? (a) 1.248 (b) 0.01248 (c) 0.1248 (d) 12.48
30. 30.0.48 × 11 — where does the decimal point go? (a) 0.528 (b) 5.28 (c) 52.8 (d) 0.0528
31. 31.1.3 × 6 — where does the decimal point go? (a) 78 (b) 7.8 (c) 0.078 (d) 0.78
32. 32.5.1 × 0.4 — where does the decimal point go? (a) 0.204 (b) 2.04 (c) 0.0204 (d) 20.4
33. 33.5.6 × 39 — where does the decimal point go? (a) 21.84 (b) 2184 (c) 218.4 (d) 2.184
34. 34.7.3 × 0.8 — where does the decimal point go? (a) 58.4 (b) 5.84 (c) 0.584 (d) 0.0584
35. 35.4.4 × 42 — where does the decimal point go? (a) 18.48 (b) 1.848 (c) 184.8 (d) 1848
36. 36.0.16 × 34 — where does the decimal point go? (a) 0.544 (b) 5.44 (c) 54.4 (d) 0.0544
37. 37.8.7 × 0.2 — where does the decimal point go? (a) 17.4 (b) 0.0174 (c) 1.74 (d) 0.174
38. 38.0.61 × 9 — where does the decimal point go? (a) 5.49 (b) 54.9 (c) 0.549 (d) 0.0549
39. 39.3.4 × 3 — where does the decimal point go? (a) 1.02 (b) 0.102 (c) 10.2 (d) 102
40. 40.0.86 × 4.9 — where does the decimal point go? (a) 4.214 (b) 0.4214 (c) 42.14 (d) 0.04214

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