Question

5．直接寫出得數(shù)．

1.2÷4=	12-4.5=	$\frac{2}{3}$×$\frac{1}{2}$=	$\frac{5}{8}$÷$\frac{8}{5}$=
1.2×0.25=	$\frac{3}{8}$÷25%=	1$\frac{1}{4}$×8=	2÷3=

Answer 1

分析 根據(jù)分?jǐn)?shù)和小數(shù)加減乘除法運(yùn)算的計(jì)算法則進(jìn)行計(jì)算即可求解．

解答 解：

1.2÷4=0.3	12-4.5=7.5	$\frac{2}{3}$×$\frac{1}{2}$=$\frac{1}{3}$	$\frac{5}{8}$÷$\frac{8}{5}$=$\frac{25}{64}$
1.2×0.25=0.3	$\frac{3}{8}$÷25%=$\frac{3}{2}$	1$\frac{1}{4}$×8=10	2÷3=$\frac{2}{3}$

點(diǎn)評(píng) 考查了分?jǐn)?shù)和小數(shù)加減乘除法運(yùn)算，關(guān)鍵是熟練掌握計(jì)算法則正確進(jìn)行計(jì)算．