a) \(\dfrac{125}{100}\)

b) 0,25

c) 1/2

a: 125%=5/4

b: 1/4=0,25

c: 50%=1/2

a: 125%=5/4

b: 1/4=0,25

c: 50%=1/2

96cm=0,96m= 96/100 m

72kg= 0,072 tấn=72/1000 tấn

324m= 324/1000 km = 0,324km

96cm=0,96m= \(\dfrac{96}{100}m\)

72kg= 0,072 tấn=\(\dfrac{72}{1000}\)tấn

324m= \(\dfrac{324}{1000}\) km =0,324km

\(24\%=\dfrac{24}{100}=\dfrac{6}{25}\)

\(=>\) Chọn đáp án B.

` 24%=24/100=(24:4)/(100:4)=6/25`

`->B`

Chọn B vì:

24% = \(\dfrac{24}{100}\) = \(\dfrac{6}{25}\)

\(0,75=\dfrac{75}{100}=\dfrac{75:25}{100:25}=\dfrac{3}{4}\\ 0,8=\dfrac{8}{10}=\dfrac{8:2}{10:2}=\dfrac{4}{5}\\ 2,15=\dfrac{215}{100}=\dfrac{215:5}{100:5}=\dfrac{43}{20}\)

A) \(0,75=\dfrac{75}{100}=\dfrac{75:25}{100:25}=\dfrac{3}{4}\)

B) \(0,8=\dfrac{8}{10}=\dfrac{8:2}{10:2}=\dfrac{4}{5}\)

C) \(2,15=\dfrac{215}{100}=\dfrac{215:5}{100:5}=\dfrac{43}{20}\)

a) \(0,75=\dfrac{3}{4}\)

b) \(0,8=\dfrac{4}{5}\)

c) \(2,15=\dfrac{43}{20}\)

a ) 1,75 = 7 4 b ) − 3,12 = − 78 25

c ) 0,63 = 63 100 . d ) − 2,19 = − 219 100

a)  1 , 32   =   33 25

b)  - 3 , 5 =   - 7 2

c)  0 , 84   =   21 25

d)  - 2 , 38   =   119 50

a) 1,32 = 33 25                              

b) -3,5= - 7 2

c) 0,84 = 21 25                                      

d) -2,38 =  119 50

a: \(=-\dfrac{7}{20}\)

b: \(=\dfrac{9}{4}\)

c: \(=-\dfrac{17}{25}\)