Question

8．直接寫得數(shù)

25×4%=	45%÷3=	0.125×$\frac{8}{5}$=	3.14×2=
3п=	0.12=	0.375×$\frac{8}{5}$=

Answer 1

分析 根據(jù)分?jǐn)?shù)、小數(shù)乘除法的計(jì)算法則進(jìn)行計(jì)算即可，有百分?jǐn)?shù)的可化成小數(shù)計(jì)算，小數(shù)與分?jǐn)?shù)相乘，可把小數(shù)化成分?jǐn)?shù)來計(jì)算，0.1²=0.1×0.1．

解答 解：

25×4%=1	45%÷3=0.15	0.125×$\frac{8}{5}$=$\frac{1}{5}$	3.14×2=6.28
3п≈9.42	0.12=0.01	0.375×$\frac{8}{5}$=$\frac{3}{5}$

點(diǎn)評(píng) 此題考查了分?jǐn)?shù)、小數(shù)四則運(yùn)算的計(jì)算法則的運(yùn)用．