Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 555 · 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. 1.3.1 × 6 — where does the decimal point go? (a) 0.186 (b) 18.6 (c) 1.86 (d) 186
2. 2.4.6 × 3 — where does the decimal point go? (a) 13.8 (b) 1.38 (c) 0.138 (d) 138
3. 3.6.2 × 0.3 — where does the decimal point go? (a) 0.186 (b) 18.6 (c) 1.86 (d) 0.0186
4. 4.4.6 × 6 — where does the decimal point go? (a) 27.6 (b) 2.76 (c) 0.276 (d) 276
5. 5.0.72 × 0.4 — where does the decimal point go? (a) 0.0288 (b) 0.00288 (c) 2.88 (d) 0.288
6. 6.0.35 × 49 — where does the decimal point go? (a) 171.5 (b) 17.15 (c) 1.715 (d) 0.1715
7. 7.0.23 × 4 — where does the decimal point go? (a) 0.092 (b) 0.92 (c) 0.0092 (d) 9.2
8. 8.0.27 × 0.3 — where does the decimal point go? (a) 0.081 (b) 0.0081 (c) 0.00081 (d) 0.81
9. 9.5.8 × 1.1 — where does the decimal point go? (a) 0.0638 (b) 63.8 (c) 6.38 (d) 0.638
10. 10.0.54 × 0.2 — where does the decimal point go? (a) 1.08 (b) 0.00108 (c) 0.108 (d) 0.0108
11. 11.8.7 × 2 — where does the decimal point go? (a) 0.174 (b) 174 (c) 1.74 (d) 17.4
12. 12.3.7 × 0.8 — where does the decimal point go? (a) 0.296 (b) 29.6 (c) 2.96 (d) 0.0296
13. 13.6.3 × 0.9 — where does the decimal point go? (a) 5.67 (b) 0.0567 (c) 56.7 (d) 0.567
14. 14.0.42 × 0.7 — where does the decimal point go? (a) 0.00294 (b) 2.94 (c) 0.294 (d) 0.0294
15. 15.3.6 × 0.7 — where does the decimal point go? (a) 2.52 (b) 0.0252 (c) 25.2 (d) 0.252
16. 16.0.88 × 23 — where does the decimal point go? (a) 202.4 (b) 0.2024 (c) 2.024 (d) 20.24
17. 17.8.1 × 2.7 — where does the decimal point go? (a) 0.2187 (b) 2.187 (c) 21.87 (d) 218.7
18. 18.8.6 × 1.1 — where does the decimal point go? (a) 94.6 (b) 0.946 (c) 9.46 (d) 0.0946
19. 19.0.64 × 4 — where does the decimal point go? (a) 0.256 (b) 2.56 (c) 0.0256 (d) 25.6
20. 20.2.4 × 0.7 — where does the decimal point go? (a) 0.0168 (b) 16.8 (c) 1.68 (d) 0.168
21. 21.0.13 × 6 — where does the decimal point go? (a) 0.78 (b) 7.8 (c) 0.078 (d) 0.0078
22. 22.7.5 × 19 — where does the decimal point go? (a) 1425 (b) 142.5 (c) 14.25 (d) 1.425
23. 23.8.1 × 0.4 — where does the decimal point go? (a) 3.24 (b) 32.4 (c) 0.0324 (d) 0.324
24. 24.7.4 × 4.6 — where does the decimal point go? (a) 3.404 (b) 340.4 (c) 0.3404 (d) 34.04
25. 25.0.68 × 2.4 — where does the decimal point go? (a) 0.1632 (b) 0.01632 (c) 16.32 (d) 1.632
26. 26.0.54 × 3 — where does the decimal point go? (a) 1.62 (b) 16.2 (c) 0.162 (d) 0.0162
27. 27.0.14 × 23 — where does the decimal point go? (a) 3.22 (b) 32.2 (c) 0.322 (d) 0.0322
28. 28.7.2 × 0.2 — where does the decimal point go? (a) 1.44 (b) 0.0144 (c) 0.144 (d) 14.4
29. 29.7.2 × 9 — where does the decimal point go? (a) 64.8 (b) 6.48 (c) 0.648 (d) 648
30. 30.0.52 × 0.2 — where does the decimal point go? (a) 0.00104 (b) 0.0104 (c) 0.104 (d) 1.04
31. 31.2.9 × 0.2 — where does the decimal point go? (a) 0.0058 (b) 0.58 (c) 5.8 (d) 0.058
32. 32.3.6 × 9 — where does the decimal point go? (a) 324 (b) 32.4 (c) 3.24 (d) 0.324
33. 33.8.3 × 26 — where does the decimal point go? (a) 215.8 (b) 2158 (c) 21.58 (d) 2.158
34. 34.9.7 × 0.4 — where does the decimal point go? (a) 0.0388 (b) 0.388 (c) 3.88 (d) 38.8
35. 35.0.72 × 4.6 — where does the decimal point go? (a) 0.3312 (b) 3.312 (c) 0.03312 (d) 33.12
36. 36.9.2 × 2.2 — where does the decimal point go? (a) 20.24 (b) 2.024 (c) 0.2024 (d) 202.4
37. 37.4.1 × 6 — where does the decimal point go? (a) 24.6 (b) 2.46 (c) 246 (d) 0.246
38. 38.0.71 × 0.5 — where does the decimal point go? (a) 3.55 (b) 0.0355 (c) 0.00355 (d) 0.355
39. 39.5.6 × 0.9 — where does the decimal point go? (a) 5.04 (b) 0.504 (c) 50.4 (d) 0.0504
40. 40.0.76 × 1.6 — where does the decimal point go? (a) 12.16 (b) 1.216 (c) 0.01216 (d) 0.1216

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