Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 301 · 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. 1.1.2 × 2.8 — where does the decimal point go? (a) 0.336 (b) 0.0336 (c) 3.36 (d) 33.6
2. 2.9.1 × 0.3 — where does the decimal point go? (a) 2.73 (b) 0.0273 (c) 0.273 (d) 27.3
3. 3.4.8 × 3.7 — where does the decimal point go? (a) 177.6 (b) 1.776 (c) 17.76 (d) 0.1776
4. 4.6.5 × 13 — where does the decimal point go? (a) 0.845 (b) 8.45 (c) 84.5 (d) 845
5. 5.1.8 × 1.8 — where does the decimal point go? (a) 32.4 (b) 3.24 (c) 0.0324 (d) 0.324
6. 6.0.43 × 48 — where does the decimal point go? (a) 0.2064 (b) 206.4 (c) 20.64 (d) 2.064
7. 7.0.93 × 0.3 — where does the decimal point go? (a) 0.279 (b) 0.00279 (c) 2.79 (d) 0.0279
8. 8.0.49 × 25 — where does the decimal point go? (a) 1.225 (b) 122.5 (c) 12.25 (d) 0.1225
9. 9.3.2 × 3.3 — where does the decimal point go? (a) 105.6 (b) 10.56 (c) 1.056 (d) 0.1056
10. 10.0.72 × 8 — where does the decimal point go? (a) 5.76 (b) 57.6 (c) 0.576 (d) 0.0576
11. 11.0.83 × 3.7 — where does the decimal point go? (a) 30.71 (b) 0.3071 (c) 0.03071 (d) 3.071
12. 12.6.7 × 0.2 — where does the decimal point go? (a) 1.34 (b) 0.0134 (c) 13.4 (d) 0.134
13. 13.0.92 × 3.3 — where does the decimal point go? (a) 0.3036 (b) 0.03036 (c) 3.036 (d) 30.36
14. 14.6.6 × 49 — where does the decimal point go? (a) 323.4 (b) 3.234 (c) 32.34 (d) 3234
15. 15.6.9 × 7 — where does the decimal point go? (a) 48.3 (b) 4.83 (c) 483 (d) 0.483
16. 16.9.1 × 0.2 — where does the decimal point go? (a) 0.182 (b) 18.2 (c) 1.82 (d) 0.0182
17. 17.5.4 × 3 — where does the decimal point go? (a) 1.62 (b) 16.2 (c) 0.162 (d) 162
18. 18.4.2 × 33 — where does the decimal point go? (a) 13.86 (b) 138.6 (c) 1386 (d) 1.386
19. 19.1.6 × 2.1 — where does the decimal point go? (a) 3.36 (b) 33.6 (c) 0.0336 (d) 0.336
20. 20.0.69 × 0.2 — where does the decimal point go? (a) 0.00138 (b) 0.0138 (c) 1.38 (d) 0.138
21. 21.0.29 × 24 — where does the decimal point go? (a) 6.96 (b) 0.696 (c) 69.6 (d) 0.0696
22. 22.5.3 × 4 — where does the decimal point go? (a) 21.2 (b) 2.12 (c) 0.212 (d) 212
23. 23.3.6 × 0.3 — where does the decimal point go? (a) 0.0108 (b) 10.8 (c) 0.108 (d) 1.08
24. 24.0.41 × 8 — where does the decimal point go? (a) 0.0328 (b) 3.28 (c) 0.328 (d) 32.8
25. 25.2.1 × 8 — where does the decimal point go? (a) 168 (b) 1.68 (c) 16.8 (d) 0.168
26. 26.0.57 × 34 — where does the decimal point go? (a) 193.8 (b) 1.938 (c) 19.38 (d) 0.1938
27. 27.0.22 × 2.4 — where does the decimal point go? (a) 0.528 (b) 0.0528 (c) 0.00528 (d) 5.28
28. 28.0.19 × 5 — where does the decimal point go? (a) 0.95 (b) 0.095 (c) 0.0095 (d) 9.5
29. 29.4.7 × 38 — where does the decimal point go? (a) 1.786 (b) 1786 (c) 178.6 (d) 17.86
30. 30.0.62 × 3 — where does the decimal point go? (a) 18.6 (b) 1.86 (c) 0.186 (d) 0.0186
31. 31.0.68 × 4.2 — where does the decimal point go? (a) 0.02856 (b) 0.2856 (c) 2.856 (d) 28.56
32. 32.2.9 × 7 — where does the decimal point go? (a) 2.03 (b) 203 (c) 0.203 (d) 20.3
33. 33.0.69 × 1.5 — where does the decimal point go? (a) 1.035 (b) 10.35 (c) 0.1035 (d) 0.01035
34. 34.3.1 × 0.2 — where does the decimal point go? (a) 6.2 (b) 0.0062 (c) 0.62 (d) 0.062
35. 35.0.67 × 42 — where does the decimal point go? (a) 2.814 (b) 0.2814 (c) 28.14 (d) 281.4
36. 36.7.6 × 27 — where does the decimal point go? (a) 20.52 (b) 205.2 (c) 2.052 (d) 2052
37. 37.7.5 × 37 — where does the decimal point go? (a) 277.5 (b) 2.775 (c) 27.75 (d) 2775
38. 38.4.6 × 4 — where does the decimal point go? (a) 18.4 (b) 1.84 (c) 0.184 (d) 184
39. 39.0.94 × 0.6 — where does the decimal point go? (a) 5.64 (b) 0.564 (c) 0.0564 (d) 0.00564
40. 40.8.5 × 9 — where does the decimal point go? (a) 765 (b) 7.65 (c) 76.5 (d) 0.765

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