Question

8．直接寫(xiě)得數(shù)

$\frac{5}{6}$÷30=	1.4÷3.5=	350×0.02=	$\frac{1}{2}$-$\frac{1}{5}$=
$\frac{6}{7}$÷3=	3.25×4=	$\frac{3}{4}$×1.2=	$\frac{1}{20}$÷5%=
$\frac{4}{5}$×1.3+$\frac{4}{5}$×3.7=	（$\frac{2}{3}$+$\frac{1}{2}$）×12=	9×$\frac{1}{8}$÷9×$\frac{1}{8}$=

Answer 1

分析 根據(jù)分?jǐn)?shù)加法、分?jǐn)?shù)減法、分?jǐn)?shù)乘法、分?jǐn)?shù)除法的計(jì)數(shù)法則及小數(shù)乘法的計(jì)算方法，進(jìn)行計(jì)算即可；其中$\frac{4}{5}$×1.3+$\frac{4}{5}$×3.7、（$\frac{2}{3}$+$\frac{1}{2}$）×12可以運(yùn)用乘法分配律進(jìn)行簡(jiǎn)算，最后一個(gè)按照從左向右的順序進(jìn)行計(jì)算．

解答 解：

$\frac{5}{6}$÷30=$\frac{1}{36}$	1.4÷3.5=$\frac{2}{5}$	350×0.02=7	$\frac{1}{2}$-$\frac{1}{5}$=$\frac{3}{10}$
$\frac{6}{7}$÷3=$\frac{2}{7}$	3.25×4=13	$\frac{3}{4}$×1.2=0.9	$\frac{1}{20}$÷5%=1
$\frac{4}{5}$×1.3+$\frac{4}{5}$×3.7=4	（$\frac{2}{3}$+$\frac{1}{2}$）×12=14	9×$\frac{1}{8}$÷9×$\frac{1}{8}$=$\frac{1}{64}$

點(diǎn)評(píng) 明確分?jǐn)?shù)加法、分?jǐn)?shù)減法、分?jǐn)?shù)乘法、分?jǐn)?shù)除法的計(jì)數(shù)法則及小數(shù)乘法的計(jì)算方法，是解答此題的關(guān)鍵．