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1.直接写出得数。
$\frac{2}{5} ÷ 5 =$
$\frac{5}{8} ÷ \frac{5}{12} =$
$\frac{5}{6} × \frac{3}{10} =$
$\frac{8}{45} ÷ \frac{8}{9} =$
$\frac{1}{3} + \frac{2}{9} =$
$\frac{2}{3} ÷ \frac{4}{15} =$
$\frac{9}{7} ÷ 5 =$
$\frac{8}{15} × \frac{3}{16} =$
$\frac{2}{5} ÷ 5 =$
$\frac{5}{8} ÷ \frac{5}{12} =$
$\frac{5}{6} × \frac{3}{10} =$
$\frac{8}{45} ÷ \frac{8}{9} =$
$\frac{1}{3} + \frac{2}{9} =$
$\frac{2}{3} ÷ \frac{4}{15} =$
$\frac{9}{7} ÷ 5 =$
$\frac{8}{15} × \frac{3}{16} =$
答案
1.$\frac{2}{25}$ $\frac{3}{2}$ $\frac{1}{4}$ $\frac{1}{5}$ $\frac{5}{9}$ $\frac{5}{2}$ $\frac{9}{35}$ $\frac{1}{10}$
识别出错
答案
2.$\frac{7}{10}$ 4 1 6 20 6
识别出错
答案
3.$(50-36)÷36=\frac{7}{18}$
识别出错
答案
4.$(52-45)÷52=\frac{7}{52}$
