Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 764 · 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. 1.8.3 × 3.4 — where does the decimal point go? (a) 28.22 (b) 0.2822 (c) 2.822 (d) 282.2
2. 2.0.86 × 2.2 — where does the decimal point go? (a) 0.01892 (b) 18.92 (c) 1.892 (d) 0.1892
3. 3.2.4 × 0.2 — where does the decimal point go? (a) 0.0048 (b) 0.48 (c) 0.048 (d) 4.8
4. 4.2.1 × 1.4 — where does the decimal point go? (a) 0.294 (b) 2.94 (c) 0.0294 (d) 29.4
5. 5.0.41 × 33 — where does the decimal point go? (a) 1.353 (b) 0.1353 (c) 13.53 (d) 135.3
6. 6.8.3 × 2.4 — where does the decimal point go? (a) 0.1992 (b) 19.92 (c) 199.2 (d) 1.992
7. 7.0.99 × 48 — where does the decimal point go? (a) 0.4752 (b) 4.752 (c) 47.52 (d) 475.2
8. 8.0.86 × 4.7 — where does the decimal point go? (a) 0.4042 (b) 4.042 (c) 0.04042 (d) 40.42
9. 9.6.6 × 8 — where does the decimal point go? (a) 528 (b) 0.528 (c) 5.28 (d) 52.8
10. 10.7.1 × 44 — where does the decimal point go? (a) 31.24 (b) 3.124 (c) 312.4 (d) 3124
11. 11.0.68 × 3.2 — where does the decimal point go? (a) 0.2176 (b) 2.176 (c) 0.02176 (d) 21.76
12. 12.1.5 × 3.7 — where does the decimal point go? (a) 5.55 (b) 0.555 (c) 0.0555 (d) 55.5
13. 13.7.5 × 0.5 — where does the decimal point go? (a) 37.5 (b) 0.375 (c) 3.75 (d) 0.0375
14. 14.8.6 × 34 — where does the decimal point go? (a) 292.4 (b) 29.24 (c) 2924 (d) 2.924
15. 15.3.2 × 3.9 — where does the decimal point go? (a) 12.48 (b) 1.248 (c) 124.8 (d) 0.1248
16. 16.7.6 × 14 — where does the decimal point go? (a) 1064 (b) 106.4 (c) 1.064 (d) 10.64
17. 17.0.22 × 0.9 — where does the decimal point go? (a) 0.198 (b) 0.00198 (c) 0.0198 (d) 1.98
18. 18.0.71 × 15 — where does the decimal point go? (a) 1.065 (b) 0.1065 (c) 106.5 (d) 10.65
19. 19.0.34 × 0.8 — where does the decimal point go? (a) 0.00272 (b) 2.72 (c) 0.272 (d) 0.0272
20. 20.5.3 × 0.3 — where does the decimal point go? (a) 1.59 (b) 0.159 (c) 15.9 (d) 0.0159
21. 21.0.96 × 16 — where does the decimal point go? (a) 0.1536 (b) 153.6 (c) 15.36 (d) 1.536
22. 22.0.69 × 0.7 — where does the decimal point go? (a) 0.483 (b) 4.83 (c) 0.0483 (d) 0.00483
23. 23.1.5 × 0.9 — where does the decimal point go? (a) 0.135 (b) 1.35 (c) 0.0135 (d) 13.5
24. 24.1.8 × 1.9 — where does the decimal point go? (a) 0.0342 (b) 34.2 (c) 0.342 (d) 3.42
25. 25.0.65 × 0.3 — where does the decimal point go? (a) 1.95 (b) 0.00195 (c) 0.0195 (d) 0.195
26. 26.9.3 × 31 — where does the decimal point go? (a) 28.83 (b) 288.3 (c) 2883 (d) 2.883
27. 27.8.6 × 0.6 — where does the decimal point go? (a) 0.0516 (b) 0.516 (c) 5.16 (d) 51.6
28. 28.0.88 × 38 — where does the decimal point go? (a) 3.344 (b) 334.4 (c) 0.3344 (d) 33.44
29. 29.2.7 × 1.1 — where does the decimal point go? (a) 0.0297 (b) 0.297 (c) 2.97 (d) 29.7
30. 30.3.3 × 9 — where does the decimal point go? (a) 0.297 (b) 2.97 (c) 297 (d) 29.7
31. 31.8.9 × 1.7 — where does the decimal point go? (a) 15.13 (b) 151.3 (c) 1.513 (d) 0.1513
32. 32.8.5 × 27 — where does the decimal point go? (a) 2.295 (b) 2295 (c) 22.95 (d) 229.5
33. 33.0.33 × 2.9 — where does the decimal point go? (a) 0.00957 (b) 0.0957 (c) 9.57 (d) 0.957
34. 34.2.9 × 15 — where does the decimal point go? (a) 4.35 (b) 0.435 (c) 435 (d) 43.5
35. 35.0.29 × 47 — where does the decimal point go? (a) 136.3 (b) 0.1363 (c) 13.63 (d) 1.363
36. 36.0.43 × 1.8 — where does the decimal point go? (a) 0.0774 (b) 0.00774 (c) 0.774 (d) 7.74
37. 37.2.1 × 0.5 — where does the decimal point go? (a) 0.0105 (b) 0.105 (c) 10.5 (d) 1.05
38. 38.0.22 × 48 — where does the decimal point go? (a) 105.6 (b) 10.56 (c) 0.1056 (d) 1.056
39. 39.3.8 × 3 — where does the decimal point go? (a) 0.114 (b) 11.4 (c) 114 (d) 1.14
40. 40.8.3 × 0.4 — where does the decimal point go? (a) 0.332 (b) 3.32 (c) 33.2 (d) 0.0332

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