Question

14．直接寫得數(shù)．

3.14×8=	$\frac{1}{5}$-$\frac{1}{6}$=	2$\frac{1}{5}$-1$\frac{4}{5}$=
2$\frac{1}{8}$÷4$\frac{1}{8}$=	1.625÷1$\frac{7}{8}$=	7$\frac{2}{3}$-0=
0.1+0.2×0.3=	0.1+0.2×0.3=	$\frac{1}{6}$+$\frac{1}{6}$÷$\frac{1}{6}$+$\frac{1}{6}$=

Answer 1

分析 根據(jù)分?jǐn)?shù)和小數(shù)加減乘除法的計(jì)算方法進(jìn)行計(jì)算．

解答 解：

3.14×8=25.12	$\frac{1}{5}$-$\frac{1}{6}$=$\frac{1}{30}$	2$\frac{1}{5}$-1$\frac{4}{5}$=$\frac{2}{5}$
2$\frac{1}{8}$÷4$\frac{1}{8}$=$\frac{17}{33}$	1.625÷1$\frac{7}{8}$=$\frac{13}{15}$	7$\frac{2}{3}$-0=7$\frac{2}{3}$
0.1+0.2×0.3=0.16	0.1+0.2×0.3=0.16	$\frac{1}{6}$+$\frac{1}{6}$÷$\frac{1}{6}$+$\frac{1}{6}$=1$\frac{1}{3}$

點(diǎn)評(píng) 口算時(shí)，注意運(yùn)算符號(hào)和數(shù)據(jù)，然后再進(jìn)一步計(jì)算．