Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 674 · 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. 1.3.4 × 8 — where does the decimal point go? (a) 2.72 (b) 27.2 (c) 0.272 (d) 272
2. 2.4.4 × 0.9 — where does the decimal point go? (a) 0.0396 (b) 3.96 (c) 0.396 (d) 39.6
3. 3.1.9 × 3 — where does the decimal point go? (a) 0.057 (b) 5.7 (c) 0.57 (d) 57
4. 4.0.57 × 1.8 — where does the decimal point go? (a) 10.26 (b) 0.1026 (c) 1.026 (d) 0.01026
5. 5.0.24 × 4.3 — where does the decimal point go? (a) 1.032 (b) 0.1032 (c) 0.01032 (d) 10.32
6. 6.5.9 × 0.2 — where does the decimal point go? (a) 0.118 (b) 1.18 (c) 0.0118 (d) 11.8
7. 7.0.22 × 8 — where does the decimal point go? (a) 1.76 (b) 0.176 (c) 17.6 (d) 0.0176
8. 8.0.22 × 0.2 — where does the decimal point go? (a) 0.044 (b) 0.0044 (c) 0.00044 (d) 0.44
9. 9.0.22 × 1.9 — where does the decimal point go? (a) 0.418 (b) 4.18 (c) 0.00418 (d) 0.0418
10. 10.7.8 × 4 — where does the decimal point go? (a) 0.312 (b) 31.2 (c) 3.12 (d) 312
11. 11.0.41 × 0.8 — where does the decimal point go? (a) 0.00328 (b) 0.0328 (c) 3.28 (d) 0.328
12. 12.2.2 × 0.4 — where does the decimal point go? (a) 8.8 (b) 0.088 (c) 0.88 (d) 0.0088
13. 13.7.6 × 4.3 — where does the decimal point go? (a) 0.3268 (b) 32.68 (c) 3.268 (d) 326.8
14. 14.0.29 × 25 — where does the decimal point go? (a) 0.725 (b) 7.25 (c) 0.0725 (d) 72.5
15. 15.0.16 × 0.9 — where does the decimal point go? (a) 0.0144 (b) 0.00144 (c) 1.44 (d) 0.144
16. 16.0.99 × 0.7 — where does the decimal point go? (a) 0.0693 (b) 0.693 (c) 6.93 (d) 0.00693
17. 17.1.6 × 38 — where does the decimal point go? (a) 0.608 (b) 6.08 (c) 608 (d) 60.8
18. 18.9.6 × 3.2 — where does the decimal point go? (a) 30.72 (b) 307.2 (c) 0.3072 (d) 3.072
19. 19.0.34 × 0.3 — where does the decimal point go? (a) 0.102 (b) 0.00102 (c) 1.02 (d) 0.0102
20. 20.0.61 × 28 — where does the decimal point go? (a) 1.708 (b) 170.8 (c) 17.08 (d) 0.1708
21. 21.9.3 × 4.5 — where does the decimal point go? (a) 4.185 (b) 41.85 (c) 0.4185 (d) 418.5
22. 22.6.1 × 49 — where does the decimal point go? (a) 2.989 (b) 29.89 (c) 2989 (d) 298.9
23. 23.2.5 × 2.3 — where does the decimal point go? (a) 5.75 (b) 0.0575 (c) 57.5 (d) 0.575
24. 24.0.56 × 9 — where does the decimal point go? (a) 0.504 (b) 50.4 (c) 5.04 (d) 0.0504
25. 25.7.1 × 0.2 — where does the decimal point go? (a) 14.2 (b) 1.42 (c) 0.0142 (d) 0.142
26. 26.2.9 × 35 — where does the decimal point go? (a) 1.015 (b) 10.15 (c) 1015 (d) 101.5
27. 27.0.34 × 7 — where does the decimal point go? (a) 0.0238 (b) 0.238 (c) 2.38 (d) 23.8
28. 28.9.8 × 12 — where does the decimal point go? (a) 1.176 (b) 11.76 (c) 1176 (d) 117.6
29. 29.5.9 × 0.9 — where does the decimal point go? (a) 5.31 (b) 0.531 (c) 53.1 (d) 0.0531
30. 30.0.24 × 48 — where does the decimal point go? (a) 1.152 (b) 0.1152 (c) 115.2 (d) 11.52
31. 31.8.6 × 8 — where does the decimal point go? (a) 688 (b) 6.88 (c) 68.8 (d) 0.688
32. 32.0.32 × 0.9 — where does the decimal point go? (a) 0.00288 (b) 0.0288 (c) 0.288 (d) 2.88
33. 33.0.23 × 0.2 — where does the decimal point go? (a) 0.00046 (b) 0.046 (c) 0.0046 (d) 0.46
34. 34.0.25 × 5 — where does the decimal point go? (a) 0.125 (b) 0.0125 (c) 12.5 (d) 1.25
35. 35.8.8 × 3 — where does the decimal point go? (a) 0.264 (b) 2.64 (c) 26.4 (d) 264
36. 36.0.61 × 3 — where does the decimal point go? (a) 1.83 (b) 0.183 (c) 0.0183 (d) 18.3
37. 37.8.4 × 0.6 — where does the decimal point go? (a) 5.04 (b) 0.0504 (c) 50.4 (d) 0.504
38. 38.0.18 × 0.8 — where does the decimal point go? (a) 0.0144 (b) 0.144 (c) 0.00144 (d) 1.44
39. 39.2.9 × 0.6 — where does the decimal point go? (a) 0.0174 (b) 1.74 (c) 0.174 (d) 17.4
40. 40.0.32 × 0.4 — where does the decimal point go? (a) 0.128 (b) 0.00128 (c) 0.0128 (d) 1.28

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