Question

10．

直接寫(xiě)出得數(shù) 0.58+0.52=	4-1.6=	3.2÷40%=	$\frac{1}{3}+\frac{1}{4}$=
0.25×40=	$14÷\frac{2}{7}$=	$\frac{3}{5}×15$=	0.72=
$1-\frac{4}{5}+\frac{1}{5}$=	$\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}$=

Answer 1

分析 運(yùn)用小數(shù)的加減乘法的計(jì)算法則進(jìn)行解答，計(jì)算1-$\frac{4}{5}$+$\frac{1}{5}$時(shí)從左向右依次計(jì)算即可．

解答

解：0.58+0.52=1.1	4-1.6=2.4	3.2÷40%=8	$\frac{1}{3}+\frac{1}{4}$=$\frac{7}{12}$
0.25×40=10	$14÷\frac{2}{7}$=49	$\frac{3}{5}×15$=9	0.72=0.49
$1-\frac{4}{5}+\frac{1}{5}$=$\frac{2}{5}$	$\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}$=$\frac{15}{16}$

點(diǎn)評(píng) 本題考查了小數(shù)的加減乘除法的計(jì)算法則及分?jǐn)?shù)加減、乘法的計(jì)算法則進(jìn)行計(jì)算即可．