Question

Tính :

a ) \(4\frac{3}{8}+5\frac{2}{3}\)

b ) \(\frac{5}{2}\times\frac{1}{3}+\frac{1}{4}\)

Answer 1

a)  \(4\frac{3}{8}+5\frac{2}{3}=4+\frac{3}{8}+5+\frac{2}{3}\)

\(=\left(4+5\right)+\left(\frac{3}{8}+\frac{2}{3}\right)\)

\(=9+\frac{25}{24}=9+1\frac{1}{24}=9+1+\frac{1}{24}\)

\(=10+\frac{1}{24}=10\frac{1}{24}\)

b )  \(\frac{5}{2}\cdot\frac{1}{3}+\frac{1}{4}=\frac{5}{6}+\frac{1}{4}=\frac{13}{12}=1\frac{1}{12}\)

Answer 2

a) 35/8+17/3= 105/24+135/24=241/24

b) 5/2*1/3+1/4= 5/6+1/4= 20/24+6/24=13/12

Answer 3

a) \(4\frac{3}{8}+5\frac{2}{3}\)

\(=\frac{35}{8}+\frac{17}{3}\)

\(=\frac{70}{16}+\frac{102}{16}\)

\(=\frac{172}{16}=\frac{43}{4}\)

b) \(\frac{5}{2}\times\frac{1}{3}+\frac{1}{4}\)

\(=\frac{5}{6}+\frac{1}{4}\)

\(=\frac{10}{12}+\frac{3}{12}\)

\(=\frac{13}{12}\)

Chúc bạn hok tốt !

Answer 4

a) \(\left(4+5\right)+\left(\frac{3}{8}+\frac{2}{3}\right)\)

=\(9+\left(\frac{3}{8}+\frac{2}{3}\right)\)

=\(9+\left(\frac{9}{24}+\frac{16}{24}\right)\)

=\(9+\frac{25}{24}\)

=\(9\frac{25}{24}\)

b)\(\frac{5}{6}+\frac{1}{4}\)

=\(\frac{10}{12}+\frac{3}{12}\)

=\(\frac{13}{12}\)

Answer 5

đề bài mình không ghi được mình ghi bài giải ra thôi

a) = 35/8 + 17/3

    = 105/24 + 136/24 (*)

    = 241/24

b) = 5/6 + 1/4

     = 10/12 + 3/12 (*)

     = 13/12

những bước mà mình cho đằng sau có (*) là bạn có thể bỏ cũng được