Giải Bài tập 6 trang 58 Toán 4 tập 2 Cánh diều

$\frac{8}{9}+\frac{1}{3}=\frac{8}{9}=\frac{3}{9}=\frac{11}{9}$

$\frac{3}{4}-\frac{1}{2}=\frac{3}{4}-\frac{2}{4}=\frac{1}{4}$

$\frac{7}{18}-\frac{1}{3}=\frac{7}{18}-\frac{6}{18}=\frac{1}{18}$

$\frac{2}{3}-\frac{7}{12}=\frac{8}{12}-\frac{7}{12}=\frac{1}{12}$

$\frac{4}{6}+\frac{1}{12}=\frac{8}{12}+\frac{1}{12}=\frac{9}{12}=\frac{3}{4}$

$\frac{19}{20}-\frac{3}{4}=\frac{19}{20}-\frac{15}{20}=\frac{4}{20}=\frac{1}{5}$

$\frac{9}{12}+\frac{3}{4}=\frac{3}{4}+\frac{3}{4}=\frac{6}{4}=\frac{3}{2}$

$\frac{1}{5}+\frac{2}{10}=\frac{1}{5}+\frac{1}{5}=\frac{2}{5}$

$\frac{4}{5}-\frac{2}{15}=\frac{12}{15}-\frac{2}{15}=\frac{10}{15}=\frac{2}{3}$

$\frac{9}{18}+\frac{1}{2}=\frac{1}{2}+\frac{1}{2}=\frac{2}{2}=1$