a, \(\frac{1}{2}\cdot\frac{2}{3}\cdot\frac{3}{4}\cdot\frac{4}{5}\cdot\frac{5}{6}=\frac{1\cdot2\cdot3\cdot4\cdot5}{2\cdot3\cdot4\cdot5\cdot6}=\frac{1}{6}\)
b, 10,3 x 37,5 - 37,5 x 10,2
= 37,5 x ( 10,3 - 10,2 )
= 37,5 x 0,1
= 3,75
a) \(\frac{1}{2}\times\frac{2}{3}\times\frac{3}{4}\times\frac{4}{5}\times\frac{5}{6}\)
\(=\frac{1\times2\times3\times4\times5}{2\times3\times4\times5\times6}\)
\(=\frac{1}{6}\)
b) 10,3 x 37,5 - 37,5 x 10,2
= 37,5 x ( 10,3 - 10,2 )
= 37,5 x 0,1
= 3,75
a)\(\frac{1}{2}x\frac{2}{3}x\frac{3}{4}x\frac{4}{5}x\frac{5}{6}\)
=\(\frac{1}{6}\)
b)10,3x37,5-37,5x10,2
=37,5x(10,3-10,2)
=37,5x0,1
=3,75
\(\frac{1}{2}\times\frac{2}{3}\times\frac{3}{4}\times\frac{4}{5}\times\frac{5}{6}\)
\(=\frac{1\times2\times3\times4\times5}{2\times3\times4\times5\times6}\)\(=\frac{1}{6}\)
\(10,3\times37,5-37,5\times10,2\)
\(=\left(10,3-10,2\right)\times37,5=0,1\times37,5=3,75\)
\(\frac{1}{2}\cdot\frac{2}{3}\cdot\frac{3}{4}\cdot\frac{4}{5}\cdot\frac{5}{6}\)
=\(\frac{1\cdot2\cdot3\cdot4\cdot5\cdot}{2\cdot3\cdot4\cdot5\cdot6}\)
=\(\frac{1\cdot1\cdot1\cdot1\cdot1}{1\cdot1\cdot1\cdot1\cdot6}\)
=\(\frac{1}{6}\)
10,3*37,5-37,5*10,2
=37,5*(10,3-10,2)
=37,5*0,1
=3,75
Ở câu a mk ghi chấm nghĩa là nhân đó
L-I-K-E nhá
a. rút gọn cho 2,3,4,5 dc 1/6
b.10,3 x 37,5 - 37,5 x 10,2
={10,3 - 10,2} x 37,5
= 0,1 x 37,5
=3,75 nhé
