《2025年新课堂学习与探究六年级数学上册青岛版》

1. 直接写得数。
$ \frac{3}{4} ÷ \frac{3}{7} = $$\frac{7}{4}$ $ 1 × \frac{3}{4} = $$\frac{3}{4}$
$ \frac{2}{3} × 6 = $4 $ 2 × \frac{1}{7} = $$\frac{2}{7}$
$ \frac{5}{9} × \frac{9}{10} = $$\frac{1}{2}$ $ \frac{4}{5} ÷ \frac{2}{3} = $$\frac{6}{5}$
$ 15 × \frac{7}{9} = $$\frac{35}{3}$ $ 24 ÷ \frac{3}{4} = $32
$ \frac{1}{2} + \frac{1}{3} = $$\frac{5}{6}$ $ \frac{3}{8} ÷ \frac{2}{3} = $$\frac{9}{16}$
$ 1 ÷ \frac{3}{4} = $$\frac{4}{3}$ $ \frac{5}{9} × \frac{9}{10} = $$\frac{1}{2}$
$ \frac{1}{2} × \frac{2}{5} = $$\frac{1}{5}$ $ \frac{3}{4} × \frac{3}{7} = $$\frac{9}{28}$
$ \frac{3}{4} - \frac{1}{2} = $$\frac{1}{4}$ $ 1 × \frac{1}{7} = $$\frac{1}{7}$
$ \frac{2}{3} ÷ 6 = $$\frac{1}{9}$ $ \frac{4}{5} - \frac{1}{6} = $$\frac{19}{30}$
$ \frac{3}{7} ÷ \frac{7}{8} = $$\frac{24}{49}$ $ \frac{1}{7} + \frac{5}{8} + \frac{3}{8} = $$1\frac{1}{7}$

答案： $\frac{7}{4}$ $\frac{3}{4}$ 4 $\frac{2}{7}$ $\frac{1}{2}$ $\frac{6}{5}$ $\frac{35}{3}$ 32 $\frac{5}{6}$ $\frac{9}{16}$ $\frac{4}{3}$ $\frac{1}{2}$ $\frac{1}{5}$ $\frac{9}{28}$ $\frac{1}{4}$ $\frac{1}{7}$ $\frac{1}{9}$ $\frac{19}{30}$ $\frac{24}{49}$ $1\frac{1}{7}$

$2. $填一填。　　
计算$ \frac{2}{5} ÷ 2 + \frac{1}{3} × \frac{3}{7} $时$,$要先算$($除法、乘法$),$最后算$($加法$)。$

答案： 除法、乘法 加法