Question

1．直接出寫得數(shù)．

50×20%=	$\frac{4}{5}$÷$\frac{5}{4}$=	$\frac{10}{7}$×$\frac{21}{5}$=	10%+43%=
1÷1%=	1-63%=	$\frac{3}{5}$÷$\frac{5}{3}$=	$\frac{3}{4}$×$\frac{5}{6}$÷$\frac{5}{6}$×$\frac{1}{4}$=

Answer 1

分析 根據(jù)分?jǐn)?shù)、百分?jǐn)?shù)四則運(yùn)算的計(jì)算法則進(jìn)行計(jì)算即可，$\frac{3}{4}$×$\frac{5}{6}$÷$\frac{5}{6}$×$\frac{1}{4}$運(yùn)用乘法結(jié)合律簡算．

解答 解：

50×20%=10	$\frac{4}{5}$÷$\frac{5}{4}$=$\frac{16}{25}$	$\frac{10}{7}$×$\frac{21}{5}$=6	10%+43%=0.53
1÷1%=100	1-63%=0.37	$\frac{3}{5}$÷$\frac{5}{3}$=$\frac{9}{25}$	$\frac{3}{4}$×$\frac{5}{6}$÷$\frac{5}{6}$×$\frac{1}{4}$=$\frac{3}{16}$

點(diǎn)評(píng) 此題考查了分?jǐn)?shù)、百分?jǐn)?shù)四則運(yùn)算的計(jì)算法則的運(yùn)用．