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简便计算下面各题。
$\frac{4}{7}\div\frac{8}{9}-\frac{1}{8}\times\frac{4}{7}$ $28.5\times101$ $3.17\times3.5 - 2.5\times3.17$
$79.8\div25\div0.04$ $30.9 - 0.68 - 6.32$ $\frac{8}{49}\div[\frac{9}{8}-(\frac{1}{8}+\frac{3}{7})]$
$\frac{4}{15}\div\frac{4}{3}+\frac{11}{15}\div\frac{4}{3}$ $75\%\times\frac{1}{9}+25\%\div9$ $5.6\times0.125 + 2.4\div8$
$(\frac{3}{5}-\frac{1}{3})\times15-\frac{1}{4}$ $(\frac{1}{3}+\frac{1}{6}+37.5\%)\times24$ $0.4\times0.93\times0.25\times10$
$4.32 + 6.7 + 5.68$ $7.3\div4 + 2.7\times0.25$ $37.5\times20\%+80\%\times37.5$
$\frac{4}{7}\div\frac{8}{9}-\frac{1}{8}\times\frac{4}{7}$ $28.5\times101$ $3.17\times3.5 - 2.5\times3.17$
$79.8\div25\div0.04$ $30.9 - 0.68 - 6.32$ $\frac{8}{49}\div[\frac{9}{8}-(\frac{1}{8}+\frac{3}{7})]$
$\frac{4}{15}\div\frac{4}{3}+\frac{11}{15}\div\frac{4}{3}$ $75\%\times\frac{1}{9}+25\%\div9$ $5.6\times0.125 + 2.4\div8$
$(\frac{3}{5}-\frac{1}{3})\times15-\frac{1}{4}$ $(\frac{1}{3}+\frac{1}{6}+37.5\%)\times24$ $0.4\times0.93\times0.25\times10$
$4.32 + 6.7 + 5.68$ $7.3\div4 + 2.7\times0.25$ $37.5\times20\%+80\%\times37.5$
答案
$\frac{4}{7}$ 2878.5 3.17
79.8 23.9 $\frac{2}{7}$
$\frac{3}{4}$ $\frac{1}{9}$ 1
$3\frac{3}{4}$ 21 0.93
16.7 2.5 37.5
79.8 23.9 $\frac{2}{7}$
$\frac{3}{4}$ $\frac{1}{9}$ 1
$3\frac{3}{4}$ 21 0.93
16.7 2.5 37.5
