Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 215 · 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. 1.2.7 × 0.6 — where does the decimal point go? (a) 1.62 (b) 0.0162 (c) 16.2 (d) 0.162
2. 2.0.95 × 3 — where does the decimal point go? (a) 0.0285 (b) 0.285 (c) 28.5 (d) 2.85
3. 3.0.74 × 0.9 — where does the decimal point go? (a) 0.666 (b) 0.00666 (c) 0.0666 (d) 6.66
4. 4.0.82 × 0.2 — where does the decimal point go? (a) 0.0164 (b) 0.00164 (c) 0.164 (d) 1.64
5. 5.0.57 × 2 — where does the decimal point go? (a) 0.114 (b) 1.14 (c) 0.0114 (d) 11.4
6. 6.8.8 × 0.4 — where does the decimal point go? (a) 3.52 (b) 0.0352 (c) 0.352 (d) 35.2
7. 7.0.21 × 3 — where does the decimal point go? (a) 0.063 (b) 6.3 (c) 0.63 (d) 0.0063
8. 8.0.99 × 19 — where does the decimal point go? (a) 1.881 (b) 18.81 (c) 0.1881 (d) 188.1
9. 9.9.1 × 3.8 — where does the decimal point go? (a) 3.458 (b) 345.8 (c) 0.3458 (d) 34.58
10. 10.0.77 × 2.1 — where does the decimal point go? (a) 0.1617 (b) 16.17 (c) 1.617 (d) 0.01617
11. 11.0.83 × 5 — where does the decimal point go? (a) 0.415 (b) 0.0415 (c) 4.15 (d) 41.5
12. 12.6.9 × 4.9 — where does the decimal point go? (a) 3.381 (b) 338.1 (c) 0.3381 (d) 33.81
13. 13.0.76 × 0.3 — where does the decimal point go? (a) 0.00228 (b) 0.0228 (c) 0.228 (d) 2.28
14. 14.9.4 × 4.3 — where does the decimal point go? (a) 0.4042 (b) 40.42 (c) 4.042 (d) 404.2
15. 15.1.4 × 2 — where does the decimal point go? (a) 0.028 (b) 2.8 (c) 0.28 (d) 28
16. 16.0.84 × 2 — where does the decimal point go? (a) 0.168 (b) 16.8 (c) 0.0168 (d) 1.68
17. 17.3.3 × 0.5 — where does the decimal point go? (a) 16.5 (b) 0.165 (c) 1.65 (d) 0.0165
18. 18.0.84 × 13 — where does the decimal point go? (a) 10.92 (b) 0.1092 (c) 1.092 (d) 109.2
19. 19.7.1 × 0.6 — where does the decimal point go? (a) 0.426 (b) 42.6 (c) 0.0426 (d) 4.26
20. 20.7.4 × 42 — where does the decimal point go? (a) 310.8 (b) 31.08 (c) 3108 (d) 3.108
21. 21.0.67 × 0.8 — where does the decimal point go? (a) 0.0536 (b) 0.00536 (c) 5.36 (d) 0.536
22. 22.0.97 × 3.1 — where does the decimal point go? (a) 0.03007 (b) 0.3007 (c) 3.007 (d) 30.07
23. 23.4.6 × 0.4 — where does the decimal point go? (a) 0.0184 (b) 1.84 (c) 0.184 (d) 18.4
24. 24.6.3 × 3.8 — where does the decimal point go? (a) 23.94 (b) 0.2394 (c) 239.4 (d) 2.394
25. 25.7.4 × 9 — where does the decimal point go? (a) 666 (b) 6.66 (c) 0.666 (d) 66.6
26. 26.0.85 × 3 — where does the decimal point go? (a) 0.0255 (b) 25.5 (c) 0.255 (d) 2.55
27. 27.0.77 × 6 — where does the decimal point go? (a) 4.62 (b) 0.462 (c) 0.0462 (d) 46.2
28. 28.0.31 × 5 — where does the decimal point go? (a) 0.155 (b) 1.55 (c) 15.5 (d) 0.0155
29. 29.5.4 × 46 — where does the decimal point go? (a) 24.84 (b) 2484 (c) 248.4 (d) 2.484
30. 30.5.6 × 9 — where does the decimal point go? (a) 0.504 (b) 50.4 (c) 504 (d) 5.04
31. 31.4.3 × 4.1 — where does the decimal point go? (a) 17.63 (b) 0.1763 (c) 176.3 (d) 1.763
32. 32.0.93 × 4.1 — where does the decimal point go? (a) 38.13 (b) 0.03813 (c) 3.813 (d) 0.3813
33. 33.0.98 × 1.7 — where does the decimal point go? (a) 1.666 (b) 16.66 (c) 0.1666 (d) 0.01666
34. 34.7.6 × 4.3 — where does the decimal point go? (a) 32.68 (b) 3.268 (c) 326.8 (d) 0.3268
35. 35.3.3 × 0.2 — where does the decimal point go? (a) 6.6 (b) 0.66 (c) 0.066 (d) 0.0066
36. 36.1.9 × 0.9 — where does the decimal point go? (a) 17.1 (b) 0.171 (c) 1.71 (d) 0.0171
37. 37.0.56 × 8 — where does the decimal point go? (a) 0.448 (b) 4.48 (c) 0.0448 (d) 44.8
38. 38.0.25 × 0.3 — where does the decimal point go? (a) 0.75 (b) 0.00075 (c) 0.0075 (d) 0.075
39. 39.2.2 × 0.8 — where does the decimal point go? (a) 0.176 (b) 0.0176 (c) 1.76 (d) 17.6
40. 40.8.4 × 3 — where does the decimal point go? (a) 0.252 (b) 25.2 (c) 2.52 (d) 252

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