Question

6．口算我最快．

2-$\frac{3}{7}$=	$\frac{3}{8}$÷8=	$\frac{1}{8}$-$\frac{1}{9}$=	$\frac{5}{11}$×$\frac{11}{5}$÷$\frac{11}{5}$=
$\frac{2}{5}$÷$\frac{2}{5}$=	0.32-0.22=	$\frac{6}{7}$÷1=	$\frac{3}{4}$×$\frac{7}{8}$÷$\frac{16}{21}$=

Answer 1

分析 根據(jù)分?jǐn)?shù)加減乘除法的計(jì)算方法進(jìn)行解答即可．

解答 解：

2-$\frac{3}{7}$=1$\frac{4}{7}$	$\frac{3}{8}$÷8=$\frac{3}{64}$	$\frac{1}{8}$-$\frac{1}{9}$=$\frac{1}{72}$	$\frac{5}{11}$×$\frac{11}{5}$÷$\frac{11}{5}$=$\frac{5}{11}$
$\frac{2}{5}$÷$\frac{2}{5}$=1	0.32-0.22=0.05	$\frac{6}{7}$÷1=$\frac{6}{7}$	$\frac{3}{4}$×$\frac{7}{8}$÷$\frac{16}{21}$=$\frac{441}{512}$

點(diǎn)評(píng) 此題考查了分?jǐn)?shù)加減乘除法的口算能力．