مقایسه کنید: $3.2 \bigcirc 3\frac{1}{2}$ $0.2 \bigcirc 1.2$ $8 \bigcirc 0.8$ $\frac{32}{10} \bigcirc 3.5$ $6 \bigcirc 1.6$ $2.6 \bigcirc 4.2$ $1\frac{1}{2} \bigcirc 1.5$ $\frac{3}{10} \bigcirc \frac{9}{10}$ $\frac{4}{10} \bigcirc 0.2$ $\frac{45}{10} \bigcirc 4.5$