Question

Cứu em bài 2 đến 5 với ạ cô giao đề khó quá

Answer 1

Bài `2` :

` 1,23; 1,32; 2,13; 2,31;3,12;3,21`

_____________________________

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`

Answer 2

` 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`