① 直接写出得数。(每题1分,共20分)
$1+\dfrac{6}{13}=$
$\dfrac{7}{3}+\dfrac{4}{3}=$
$\dfrac{1}{2}-\dfrac{1}{5}=$
$\dfrac{9}{16}-\dfrac{5}{12}+\dfrac{3}{16}=$
$\dfrac{3}{5}+\dfrac{2}{5}=$
$\dfrac{7}{4}+\dfrac{5}{4}=$
$\dfrac{9}{14}-\dfrac{5}{14}=$
$\dfrac{5}{6}-\dfrac{1}{6}+\dfrac{1}{6}=$
$\dfrac{2}{3}-\dfrac{1}{6}=$
$\dfrac{7}{9}+\dfrac{2}{9}=$
$1-\dfrac{3}{5}=$
$\dfrac{3}{10}+\dfrac{7}{10}-\dfrac{6}{11}=$
$\dfrac{1}{8}+\dfrac{1}{3}=$
$0.4+\dfrac{3}{4}=$
$4-\dfrac{7}{3}=$
$\dfrac{6}{7}+\dfrac{2}{9}+\dfrac{1}{7}=$
$\dfrac{3}{7}+\dfrac{4}{7}=$
$\dfrac{2}{3}-\dfrac{2}{5}=$
$\dfrac{1}{6}+\dfrac{1}{7}=$
$2-\dfrac{5}{7}-\dfrac{2}{7}=$

1.$\dfrac{19}{13}$
2.$\dfrac{11}{3}$
3.$\dfrac{3}{10}$
4.$\dfrac{1}{3}$
5.$1$
6.$3$
7.$\dfrac{2}{7}$
8.$\dfrac{5}{6}$
9.$\dfrac{1}{2}$
10.$1$
11.$\dfrac{2}{5}$
12.$\dfrac{5}{11}$
13.$\dfrac{11}{24}$
14.$\dfrac{23}{20}$
15.$\dfrac{5}{3}$
16.$\dfrac{11}{9}$
17.$1$
18.$\dfrac{4}{15}$
19.$\dfrac{13}{42}$
20.$1$

② 计算。(每题3分,共18分)
$\frac{5}{11}+\frac{5}{13}+\frac{6}{11}$
$2-(\frac{1}{3}+\frac{5}{3})$
$\frac{13}{15}+\frac{13}{15}+\frac{2}{5}+\frac{2}{5}$
$\frac{1}{10}+\frac{3}{8}-\frac{2}{5}$
$\frac{1}{2}+\frac{3}{10}-\frac{1}{5}$
$\frac{4}{5}+(\frac{3}{8}-\frac{1}{4})$

1.$\dfrac{18}{13}$
2.$0$
3.$\dfrac{38}{15}$
4.$\dfrac{3}{40}$
5.$\dfrac{3}{5}$
6.$\dfrac{37}{40}$

③ 解方程。(每题4分,共12分)
$x+\frac{3}{11}-\frac{2}{11}=\frac{4}{11}$
$2x-\frac{5}{6}=\frac{1}{6}$
$x+\frac{11}{10}=2$

解:$x=\dfrac{3}{11}$
解:$x=\dfrac{1}{2}$
解:$x=\dfrac{9}{10}$