计算下面各题,能用简便算法的就用简便算法。(建议用时10分钟)
$\frac{5}{6} + \frac{3}{5} × 80\%$
$\frac{7}{8} - \frac{1}{4} × ( \frac{8}{9} ÷ \frac{2}{3} )$
$( \frac{1}{2} - \frac{1}{3} ) × \frac{3}{5} ÷ 20\%$
$\frac{4}{5} ÷ 3 + \frac{2}{3} × \frac{4}{5}$
$\frac{2}{5} + \frac{1}{2} × \frac{3}{5} + \frac{7}{10}$
$22 - ( \frac{1}{12} + \frac{1}{16} ) × 48$
$( \frac{1}{2} + \frac{2}{3} - \frac{5}{18} ) ÷ \frac{1}{36}$
$( \frac{7}{8} - \frac{5}{16} ) × ( \frac{5}{9} + \frac{2}{3} )$
$\frac{7}{20} × 19 + 3.5 × 10\%$
$\frac{1}{14} ÷ 7 + 7 ÷ \frac{1}{14}$
$\frac{3}{4} × 88 + \frac{1}{4} ÷ \frac{1}{88}$
$[ 1 - ( \frac{3}{4} + \frac{1}{12} ) ] × \frac{3}{2}$
$\frac{9}{10} × \frac{7}{18} + \frac{9}{10} ÷ \frac{18}{7}$
$4.8 × 12.5\% + 4.8 × \frac{7}{8}$
$\frac{5}{14} ÷ [ \frac{6}{7} × ( \frac{2}{3} + \frac{1}{6} ) ]$

1.$\frac{197}{150}$
2.$\frac{13}{24}$
3.$\frac{1}{2}$
4.$\frac{4}{5}$
5.$\frac{7}{5}$
6.$15$
7.$32$
8.$\frac{11}{16}$
9.$7$
10.$98\frac{1}{98}$
11.$88$
12.$\frac{1}{4}$
13.$\frac{7}{10}$
14.$4.8$
15.$\frac{1}{2}$