Question

12．直接寫(xiě)出得數(shù)．

2.54-1.42=	3.05+2.83=	32=	18.6÷6=
$\frac{1}{4}$-$\frac{1}{5}$=	$\frac{6}{7}$÷$\frac{3}{14}$=	$\frac{5}{9}$×$\frac{3}{10}$=	30×10%=

Answer 1

分析 根據(jù)小數(shù)根據(jù)小數(shù)和分?jǐn)?shù)加減、乘、除法的計(jì)算方法進(jìn)行計(jì)算．

解答 解：

2.54-1.42=1.12	3.05+2.83=5.88	32=9	18.6÷6=3.1
$\frac{1}{4}$-$\frac{1}{5}$=$\frac{1}{20}$	$\frac{6}{7}$÷$\frac{3}{14}$=4	$\frac{5}{9}$×$\frac{3}{10}$=$\frac{1}{6}$	30×10%=3

點(diǎn)評(píng) 本題主要考查了學(xué)生對(duì)小數(shù)和分?jǐn)?shù)加、減、乘、除法的計(jì)算能力．