(5)戏曲社团要给学生2小时的时间进行排练。学生第一次排练了$\frac{1}{2}$小时,第二次排练了剩下时间的$\frac{1}{2}$,还要再排练(
A.1
B.$\frac{1}{2}$
C.$\frac{3}{4}$
3 计算下面各题,能简算的要简算。
$\frac{1}{5}×\frac{6}{7}+\frac{6}{7}÷\frac{5}{13}$ $\quad$ $\frac{8}{29}÷\frac{4}{9}÷\frac{9}{4}$
$\frac{3}{4}÷(\frac{4}{5}+\frac{1}{4})×\frac{3}{7}$ $\quad$ $(\frac{5}{7}-\frac{1}{9}+\frac{1}{3})×63$
$0.6×37+62×\frac{3}{5}+\frac{3}{5}$ $\quad$ $\frac{7}{15}÷[(\frac{1}{3}-\frac{1}{4})×6]$
C
)小时。A.1
B.$\frac{1}{2}$
C.$\frac{3}{4}$
3 计算下面各题,能简算的要简算。
$\frac{1}{5}×\frac{6}{7}+\frac{6}{7}÷\frac{5}{13}$ $\quad$ $\frac{8}{29}÷\frac{4}{9}÷\frac{9}{4}$
$\frac{3}{4}÷(\frac{4}{5}+\frac{1}{4})×\frac{3}{7}$ $\quad$ $(\frac{5}{7}-\frac{1}{9}+\frac{1}{3})×63$
$0.6×37+62×\frac{3}{5}+\frac{3}{5}$ $\quad$ $\frac{7}{15}÷[(\frac{1}{3}-\frac{1}{4})×6]$
答案:(5)C
3 计算下面各题,能简算的要简算。
$\frac{1}{5}×\frac{6}{7}+\frac{6}{7}÷\frac{5}{13}$
$\frac{8}{29}÷\frac{4}{9}÷\frac{9}{4}$
$\frac{3}{4}÷(\frac{4}{5}+\frac{1}{4})×\frac{3}{7}$
$(\frac{5}{7}-\frac{1}{9}+\frac{1}{3})×63$
$0.6×37+62×\frac{3}{5}+\frac{3}{5}$
$\frac{7}{15}÷[(\frac{1}{3}-\frac{1}{4})×6]$
$\frac{1}{5}×\frac{6}{7}+\frac{6}{7}÷\frac{5}{13}$
$\frac{8}{29}÷\frac{4}{9}÷\frac{9}{4}$
$\frac{3}{4}÷(\frac{4}{5}+\frac{1}{4})×\frac{3}{7}$
$(\frac{5}{7}-\frac{1}{9}+\frac{1}{3})×63$
$0.6×37+62×\frac{3}{5}+\frac{3}{5}$
$\frac{7}{15}÷[(\frac{1}{3}-\frac{1}{4})×6]$
答案:计算结果依次为$\frac{12}{5}$、$\frac{8}{29}$、$\frac{15}{49}$、59、60、$\frac{14}{15}$