《2025年天天练口算五年级数学下册人教版》

4
$\frac{1}{2}+\frac{1}{3}=$ $\frac{3}{5}+\frac{3}{5}=$ $\frac{1}{6}+\frac{1}{7}=$
$\frac{1}{2}-\frac{1}{3}=$ $\frac{8}{17}-\frac{2}{17}=$ $\frac{4}{7}-\frac{2}{5}=$
$\frac{1}{3}+\frac{1}{4}=$ $\frac{2}{3}-\frac{5}{12}=$ $\frac{2}{7}+\frac{3}{14}=$
$\frac{1}{3}-\frac{1}{4}=$ $\frac{2}{3}+\frac{1}{6}=$ $\frac{1}{5}-\frac{1}{8}=$
$\frac{1}{4}+\frac{1}{5}=$ $\frac{1}{16}+\frac{15}{16}=$ $\frac{3}{7}-\frac{1}{6}=$
$\frac{1}{4}-\frac{1}{5}=$ $\frac{5}{12}-\frac{1}{12}=$ $\frac{4}{9}-\frac{1}{3}=$
$\frac{1}{5}+\frac{1}{6}=$ $\frac{5}{12}+\frac{1}{6}=$ $\frac{3}{4}+\frac{3}{5}=$
$\frac{1}{5}-\frac{1}{6}=$ $\frac{3}{20}+\frac{3}{10}=$ $\frac{3}{7}+\frac{3}{5}=$

答案：

$\frac{3}{4}+\frac{2}{5}$ $\square-\frac{1}{4}$ $\square-\frac{1}{4}$ $\square+\frac{1}{3}$ $\square$
$\frac{2}{3}+\frac{1}{6}$ $\square-\frac{1}{3}$ $\square+\frac{1}{5}$ $\square+\frac{3}{8}$ $\square$
$\frac{1}{2}+\frac{2}{5}$ $\square+\frac{1}{6}$ $\square-\frac{2}{3}$ $\square+\frac{3}{10}$ $\square$

答案：