Question

9．直接寫(xiě)出得數(shù)．

2×$\frac{3}{4}$=	$\frac{6}{11}$×$\frac{5}{4}$=	5.02-4.5=	$\frac{3}{4}$-$\frac{1}{8}$=
$\frac{2}{5}$÷$\frac{2}{5}$=	$\frac{6}{7}$÷3=	$\frac{4}{5}$×$\frac{5}{12}$×10=	45×101=

Answer 1

分析 根據(jù)分?jǐn)?shù)、小數(shù)和整數(shù)加減乘除法的計(jì)算方法進(jìn)行計(jì)算．
45×101根據(jù)乘法分配律進(jìn)行簡(jiǎn)算．

解答 解：

2×$\frac{3}{4}$=$\frac{3}{2}$	$\frac{6}{11}$×$\frac{5}{4}$=$\frac{15}{22}$	5.02-4.5=0.52	$\frac{3}{4}$-$\frac{1}{8}$=$\frac{5}{8}$
$\frac{2}{5}$÷$\frac{2}{5}$=1	$\frac{6}{7}$÷3=$\frac{2}{7}$	$\frac{4}{5}$×$\frac{5}{12}$×10=$\frac{10}{3}$	45×101=4545

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．