登录
二、计算下面各题，怎样简便就怎样计算。
$ 0.8 × 2.5 × 1.25 $$ $$ 40 - (4 - 0.25) ÷ 1.5 $$ $$ \frac{8}{9} + (1 - \frac{3}{4}) × \frac{4}{9} $
$ 5 - 5 × 40\% + 60\% $$ $$ \frac{7}{9} ÷ \frac{11}{5} + \frac{2}{9} × \frac{5}{11} $$ $$ 80\% ÷ 70\% × 14 - 80\% $
$ \frac{2}{3} ÷ 6 + \frac{1}{3} × \frac{1}{6} $$ $$ \frac{9}{16} ÷ (\frac{3}{8} + \frac{1}{16}) + \frac{2}{3} $$ $$ 20.3 - (6.3 + 0.5 ÷ 25\%) $
$ 4 ÷ \frac{7}{8} + 3 ÷ \frac{7}{8} $$ $$ (\frac{1}{2} + \frac{2}{3} + \frac{5}{6}) ÷ \frac{1}{36} $$ $$ \frac{5}{16} ÷ [(\frac{1}{5} + \frac{1}{4}) × \frac{10}{3}] $
$ 70 ÷ 25 + 3.26 + 6.74 $$ $$ 3 ÷ \frac{3}{7} - \frac{3}{7} ÷ 3 $$ $$ \frac{11}{20} ÷ [\frac{1}{2} × (\frac{2}{3} + \frac{4}{5})] $
$ 0.8 × 2.5 × 1.25 $$ $$ 40 - (4 - 0.25) ÷ 1.5 $$ $$ \frac{8}{9} + (1 - \frac{3}{4}) × \frac{4}{9} $
$ 5 - 5 × 40\% + 60\% $$ $$ \frac{7}{9} ÷ \frac{11}{5} + \frac{2}{9} × \frac{5}{11} $$ $$ 80\% ÷ 70\% × 14 - 80\% $
$ \frac{2}{3} ÷ 6 + \frac{1}{3} × \frac{1}{6} $$ $$ \frac{9}{16} ÷ (\frac{3}{8} + \frac{1}{16}) + \frac{2}{3} $$ $$ 20.3 - (6.3 + 0.5 ÷ 25\%) $
$ 4 ÷ \frac{7}{8} + 3 ÷ \frac{7}{8} $$ $$ (\frac{1}{2} + \frac{2}{3} + \frac{5}{6}) ÷ \frac{1}{36} $$ $$ \frac{5}{16} ÷ [(\frac{1}{5} + \frac{1}{4}) × \frac{10}{3}] $
$ 70 ÷ 25 + 3.26 + 6.74 $$ $$ 3 ÷ \frac{3}{7} - \frac{3}{7} ÷ 3 $$ $$ \frac{11}{20} ÷ [\frac{1}{2} × (\frac{2}{3} + \frac{4}{5})] $
答案
$2.5$ $37.5$ $1$
$3\frac{3}{5}$ $\frac{5}{11}$ $15.2$
$\frac{1}{6}$ $\frac{41}{21}$ $12$
$8$ $72$ $\frac{5}{24}$
$12.8$ $6\frac{6}{7}$ $\frac{3}{4}$
$3\frac{3}{5}$ $\frac{5}{11}$ $15.2$
$\frac{1}{6}$ $\frac{41}{21}$ $12$
$8$ $72$ $\frac{5}{24}$
$12.8$ $6\frac{6}{7}$ $\frac{3}{4}$
