Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 766 · 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. 1.8.4 × 6 — where does the decimal point go? (a) 504 (b) 5.04 (c) 50.4 (d) 0.504
2. 2.0.53 × 12 — where does the decimal point go? (a) 6.36 (b) 0.636 (c) 0.0636 (d) 63.6
3. 3.9.7 × 0.8 — where does the decimal point go? (a) 0.776 (b) 7.76 (c) 77.6 (d) 0.0776
4. 4.4.5 × 7 — where does the decimal point go? (a) 0.315 (b) 31.5 (c) 3.15 (d) 315
5. 5.1.8 × 6 — where does the decimal point go? (a) 10.8 (b) 108 (c) 0.108 (d) 1.08
6. 6.5.2 × 42 — where does the decimal point go? (a) 21.84 (b) 218.4 (c) 2184 (d) 2.184
7. 7.9.6 × 2 — where does the decimal point go? (a) 1.92 (b) 19.2 (c) 192 (d) 0.192
8. 8.0.51 × 2 — where does the decimal point go? (a) 1.02 (b) 10.2 (c) 0.102 (d) 0.0102
9. 9.0.79 × 2.4 — where does the decimal point go? (a) 1.896 (b) 0.01896 (c) 0.1896 (d) 18.96
10. 10.4.7 × 3 — where does the decimal point go? (a) 141 (b) 0.141 (c) 14.1 (d) 1.41
11. 11.0.24 × 4 — where does the decimal point go? (a) 0.96 (b) 0.096 (c) 0.0096 (d) 9.6
12. 12.0.19 × 16 — where does the decimal point go? (a) 30.4 (b) 0.304 (c) 0.0304 (d) 3.04
13. 13.8.4 × 0.2 — where does the decimal point go? (a) 0.0168 (b) 1.68 (c) 0.168 (d) 16.8
14. 14.5.2 × 0.9 — where does the decimal point go? (a) 0.468 (b) 46.8 (c) 0.0468 (d) 4.68
15. 15.7.7 × 35 — where does the decimal point go? (a) 2.695 (b) 269.5 (c) 26.95 (d) 2695
16. 16.5.7 × 8 — where does the decimal point go? (a) 456 (b) 45.6 (c) 4.56 (d) 0.456
17. 17.5.4 × 0.3 — where does the decimal point go? (a) 0.0162 (b) 0.162 (c) 1.62 (d) 16.2
18. 18.0.92 × 47 — where does the decimal point go? (a) 4.324 (b) 432.4 (c) 0.4324 (d) 43.24
19. 19.9.6 × 32 — where does the decimal point go? (a) 3072 (b) 307.2 (c) 3.072 (d) 30.72
20. 20.1.8 × 2 — where does the decimal point go? (a) 0.36 (b) 0.036 (c) 36 (d) 3.6
21. 21.8.2 × 4.8 — where does the decimal point go? (a) 0.3936 (b) 3.936 (c) 393.6 (d) 39.36
22. 22.0.21 × 46 — where does the decimal point go? (a) 0.0966 (b) 0.966 (c) 96.6 (d) 9.66
23. 23.0.34 × 4 — where does the decimal point go? (a) 0.0136 (b) 13.6 (c) 1.36 (d) 0.136
24. 24.0.74 × 4 — where does the decimal point go? (a) 29.6 (b) 0.0296 (c) 0.296 (d) 2.96
25. 25.0.12 × 9 — where does the decimal point go? (a) 1.08 (b) 0.0108 (c) 10.8 (d) 0.108
26. 26.5.5 × 3 — where does the decimal point go? (a) 1.65 (b) 165 (c) 0.165 (d) 16.5
27. 27.6.3 × 0.2 — where does the decimal point go? (a) 0.126 (b) 0.0126 (c) 1.26 (d) 12.6
28. 28.4.7 × 38 — where does the decimal point go? (a) 1786 (b) 1.786 (c) 17.86 (d) 178.6
29. 29.0.37 × 3 — where does the decimal point go? (a) 0.111 (b) 1.11 (c) 11.1 (d) 0.0111
30. 30.2.1 × 4.8 — where does the decimal point go? (a) 1.008 (b) 100.8 (c) 10.08 (d) 0.1008
31. 31.0.22 × 2 — where does the decimal point go? (a) 0.044 (b) 0.44 (c) 0.0044 (d) 4.4
32. 32.5.1 × 3.3 — where does the decimal point go? (a) 0.1683 (b) 16.83 (c) 168.3 (d) 1.683
33. 33.0.51 × 6 — where does the decimal point go? (a) 0.0306 (b) 0.306 (c) 3.06 (d) 30.6
34. 34.8.3 × 0.2 — where does the decimal point go? (a) 1.66 (b) 16.6 (c) 0.166 (d) 0.0166
35. 35.0.12 × 0.3 — where does the decimal point go? (a) 0.00036 (b) 0.36 (c) 0.036 (d) 0.0036
36. 36.7.1 × 5 — where does the decimal point go? (a) 35.5 (b) 3.55 (c) 0.355 (d) 355
37. 37.4.6 × 0.8 — where does the decimal point go? (a) 36.8 (b) 0.368 (c) 3.68 (d) 0.0368
38. 38.2.6 × 4.1 — where does the decimal point go? (a) 1.066 (b) 0.1066 (c) 10.66 (d) 106.6
39. 39.0.98 × 0.6 — where does the decimal point go? (a) 0.588 (b) 5.88 (c) 0.0588 (d) 0.00588
40. 40.6.9 × 3.6 — where does the decimal point go? (a) 24.84 (b) 0.2484 (c) 2.484 (d) 248.4

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