Question

4．口算

$1÷\frac{7}{8}$=	$\frac{1}{2}-\frac{1}{3}$=	$\frac{9}{11}÷3$=	$16÷\frac{4}{5}$=
$\frac{9}{1001}×0$=	22+32=	$\frac{1}{8}×32$=	$\frac{6}{7}+\frac{6}{7}×6$=
1-5%=	$\frac{2}{3}：6$=

Answer 1

分析 根據(jù)分?jǐn)?shù)加減乘除法的計(jì)算方法進(jìn)行計(jì)算．
$\frac{6}{7}+\frac{6}{7}×6$根據(jù)乘法分配律進(jìn)行簡(jiǎn)算．

解答 解：

$1÷\frac{7}{8}$=$\frac{8}{7}$	$\frac{1}{2}-\frac{1}{3}$=$\frac{1}{6}$	$\frac{9}{11}÷3$=$\frac{3}{11}$	$16÷\frac{4}{5}$=20
$\frac{9}{1001}×0$=0	22+32=13	$\frac{1}{8}×32$=4	$\frac{6}{7}+\frac{6}{7}×6$=6
1-5%=95%	$\frac{2}{3}：6$=$\frac{1}{9}$

點(diǎn)評(píng) 口算時(shí)，注意運(yùn)算符號(hào)和數(shù)據(jù)，然后再進(jìn)一步計(jì)算．