Ôn tập về so sánh phân số

$\begin{array}{rcl}{\displaystyle \frac{3}{4}}\times {\displaystyle \frac{5}{5}}& =& {\displaystyle \frac{15}{20}}\\ \\ {\displaystyle \frac{5}{10}}\times {\displaystyle \frac{2}{2}}& =& {\displaystyle \frac{10}{20}}\end{array}$‍

$\blueD{15} > \greenD{10}$start color #11accd, 15, end color #11accd, is greater than, start color #1fab54, 10, end color #1fab54

$\blueD{\dfrac{15}{20}} > \greenD{\dfrac{10}{20}}$start color #11accd, start fraction, 15, divided by, 20, end fraction, end color #11accd, is greater than, start color #1fab54, start fraction, 10, divided by, 20, end fraction, end color #1fab54

$\blueD{\dfrac{3}{4}} > \greenD{\dfrac{5}{10}}$start color #11accd, start fraction, 3, divided by, 4, end fraction, end color #11accd, is greater than, start color #1fab54, start fraction, 5, divided by, 10, end fraction, end color #1fab54