9

chín

4+ 5

56

 $\frac{3}{8}+\frac{5}{8}=\frac{3\ +\ 5}{8\ +\ 8}=\ \frac{8}{16}=\frac{1}{2}$  

 $\frac{3}{8}+\frac{5}{8}=\frac{3\ +\ 5}{8}=\ \frac{8}{8}=1$  

 $\frac{3}{8}+\frac{5}{8}=\frac{3}{8\ +8}=\ \frac{3}{16}$  

 $\frac{3}{8}+\frac{5}{8}=\frac{5}{8\ +\ 8}=\ \frac{5}{16}$  

 $\frac{4}{6}+\frac{1}{6}=\frac{5}{6}$  

 $\frac{2}{6}+\frac{5}{6}=\frac{7}{6}$  

 $\frac{4}{6}+\frac{1}{6}=\frac{6}{5}$  

 $\frac{4}{2}+\frac{1}{2}=\frac{5}{2}$  

5

6

7

23

24

25

26

 $\frac{4}{7}$  cái bánh

 $\frac{5}{7}$  cái bánh

 $\frac{6}{7}$  cái bánh

Tất cả cái bánh