Bài `2` :
` 1,23; 1,32; 2,13; 2,31;3,12;3,21`
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Bài `3` :
\(\dfrac{23}{10}=2\dfrac{3}{10}=2,3\)
\(\dfrac{47}{10}=4\dfrac{7}{10}=4,7\)
\(\dfrac{137}{100}=1\dfrac{37}{100}=1,37\)
\(\dfrac{123}{10}=10\dfrac{23}{10}=12,3\)
\(\dfrac{6789}{100}=67\dfrac{89}{100}=67,89\)
`45% = 45/100 = 9/20`
`70% = 70/100 = 7/10`
`25% = 25/100 = 1/4`
_______________________________
`#BaoL i n h`
` 1,23; 1,32; 2,13; 2,31;3,12;3,21`
`a)`
\(\dfrac{23}{10}=2\dfrac{3}{10}=2,3\)
\(\dfrac{47}{10}=4\dfrac{7}{10}=4,7\)
\(\dfrac{137}{100}=1\dfrac{37}{100}=1,37\)
\(\dfrac{123}{10}=10\dfrac{23}{10}=12,3\)
\(\dfrac{6789}{100}=67\dfrac{89}{100}=67,89\)
`b)`
`45% = 45/100 = 9/20`
`70% = 70/100 = 7/10`
`25% = 25/100 = 1/4`