Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 263 · 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. 1.8.2 × 42 — where does the decimal point go? (a) 3.444 (b) 3444 (c) 34.44 (d) 344.4
2. 2.0.98 × 29 — where does the decimal point go? (a) 284.2 (b) 28.42 (c) 0.2842 (d) 2.842
3. 3.6.5 × 25 — where does the decimal point go? (a) 1.625 (b) 1625 (c) 16.25 (d) 162.5
4. 4.6.4 × 44 — where does the decimal point go? (a) 28.16 (b) 2816 (c) 281.6 (d) 2.816
5. 5.7.4 × 1.9 — where does the decimal point go? (a) 140.6 (b) 0.1406 (c) 14.06 (d) 1.406
6. 6.1.5 × 3 — where does the decimal point go? (a) 0.45 (b) 0.045 (c) 4.5 (d) 45
7. 7.9.4 × 0.8 — where does the decimal point go? (a) 75.2 (b) 0.752 (c) 7.52 (d) 0.0752
8. 8.0.22 × 3 — where does the decimal point go? (a) 0.066 (b) 6.6 (c) 0.66 (d) 0.0066
9. 9.0.56 × 19 — where does the decimal point go? (a) 106.4 (b) 1.064 (c) 0.1064 (d) 10.64
10. 10.2.9 × 8 — where does the decimal point go? (a) 23.2 (b) 0.232 (c) 232 (d) 2.32
11. 11.7.1 × 0.8 — where does the decimal point go? (a) 5.68 (b) 0.0568 (c) 0.568 (d) 56.8
12. 12.3.2 × 0.9 — where does the decimal point go? (a) 2.88 (b) 0.288 (c) 28.8 (d) 0.0288
13. 13.0.29 × 1.7 — where does the decimal point go? (a) 0.493 (b) 0.00493 (c) 0.0493 (d) 4.93
14. 14.3.3 × 2 — where does the decimal point go? (a) 6.6 (b) 0.066 (c) 66 (d) 0.66
15. 15.1.4 × 47 — where does the decimal point go? (a) 0.658 (b) 658 (c) 6.58 (d) 65.8
16. 16.0.91 × 7 — where does the decimal point go? (a) 0.0637 (b) 0.637 (c) 6.37 (d) 63.7
17. 17.0.16 × 4 — where does the decimal point go? (a) 0.0064 (b) 6.4 (c) 0.64 (d) 0.064
18. 18.1.3 × 0.3 — where does the decimal point go? (a) 0.39 (b) 0.0039 (c) 3.9 (d) 0.039
19. 19.1.8 × 46 — where does the decimal point go? (a) 828 (b) 0.828 (c) 82.8 (d) 8.28
20. 20.9.3 × 4.3 — where does the decimal point go? (a) 39.99 (b) 399.9 (c) 0.3999 (d) 3.999
21. 21.3.1 × 24 — where does the decimal point go? (a) 0.744 (b) 744 (c) 74.4 (d) 7.44
22. 22.6.9 × 4 — where does the decimal point go? (a) 27.6 (b) 2.76 (c) 0.276 (d) 276
23. 23.0.14 × 0.2 — where does the decimal point go? (a) 0.028 (b) 0.0028 (c) 0.00028 (d) 0.28
24. 24.0.21 × 48 — where does the decimal point go? (a) 10.08 (b) 1.008 (c) 100.8 (d) 0.1008
25. 25.0.23 × 0.9 — where does the decimal point go? (a) 0.00207 (b) 2.07 (c) 0.207 (d) 0.0207
26. 26.0.13 × 3.6 — where does the decimal point go? (a) 0.00468 (b) 4.68 (c) 0.0468 (d) 0.468
27. 27.8.4 × 0.4 — where does the decimal point go? (a) 0.336 (b) 0.0336 (c) 3.36 (d) 33.6
28. 28.0.14 × 4.2 — where does the decimal point go? (a) 0.0588 (b) 0.588 (c) 5.88 (d) 0.00588
29. 29.6.1 × 1.2 — where does the decimal point go? (a) 0.732 (b) 0.0732 (c) 73.2 (d) 7.32
30. 30.0.93 × 8 — where does the decimal point go? (a) 0.744 (b) 74.4 (c) 0.0744 (d) 7.44
31. 31.0.72 × 2.1 — where does the decimal point go? (a) 15.12 (b) 0.01512 (c) 0.1512 (d) 1.512
32. 32.0.36 × 0.4 — where does the decimal point go? (a) 0.144 (b) 0.00144 (c) 1.44 (d) 0.0144
33. 33.0.51 × 14 — where does the decimal point go? (a) 0.0714 (b) 7.14 (c) 71.4 (d) 0.714
34. 34.0.37 × 0.2 — where does the decimal point go? (a) 0.0074 (b) 0.00074 (c) 0.074 (d) 0.74
35. 35.0.41 × 0.8 — where does the decimal point go? (a) 3.28 (b) 0.00328 (c) 0.328 (d) 0.0328
36. 36.0.16 × 16 — where does the decimal point go? (a) 2.56 (b) 0.256 (c) 0.0256 (d) 25.6
37. 37.8.1 × 7 — where does the decimal point go? (a) 0.567 (b) 567 (c) 56.7 (d) 5.67
38. 38.8.8 × 4 — where does the decimal point go? (a) 352 (b) 35.2 (c) 3.52 (d) 0.352
39. 39.0.51 × 7 — where does the decimal point go? (a) 3.57 (b) 0.0357 (c) 35.7 (d) 0.357
40. 40.3.9 × 1.3 — where does the decimal point go? (a) 5.07 (b) 50.7 (c) 0.507 (d) 0.0507

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