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

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

\(=>\) Chọn đáp án B.

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

`->B`

Chọn B vì:

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

2/3

4

\(\dfrac{13}{15}-\dfrac{1}{5}=\dfrac{13}{15}=\dfrac{3}{15}=\dfrac{10}{15}=\dfrac{2}{3}\)

\(\dfrac{7}{8}\times\dfrac{2}{7}=\dfrac{14}{56}=\dfrac{1}{4}\)

a: \(-1,\left(3\right)=-\dfrac{4}{3}\)

b: \(0,\left(72\right)=\dfrac{8}{11}\)

a .   x : 1 2 = 4 x = 4   x   1 2 x   =   2

b .   x   × 3 5 = 15 x   =   15 : 3 5 x = 25

b .   x   × 3 5 = 15

a) \(x:\frac{1}{2}=4\)

\(x=4\times\frac{1}{2}\)

\(x=2\)

b)\(x\times\frac{3}{5}=15\)

\(x=15:\frac{3}{5}\)

\(x=25\)

a) \(\text{X}\div\frac{1}{2}=4\)

\(\text{X}=4\times\frac{1}{2}\)

\(\text{X}=2\)

b) \(\text{X}\times\frac{3}{5}=15\)

\(\text{X}=15\div\frac{3}{5}\)

\(\text{X}=25\)

Giải đáp

a) x = 4 x 1/2

x = 2

b) x = 15 : 3/5

x = 75/3

x = 25
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