Question

7．直接寫出得數(shù)

8-3.4=	1.75+25=	$\frac{5}{9}$÷$\frac{1}{3}$=	$\frac{1}{6}$×13-$\frac{1}{6}$=	0.4×9×25=
$\frac{1}{4}$÷4=	3.14÷6.28=	$\frac{4}{5}$×$\frac{5}{9}$=	2÷$\frac{2}{5}$-$\frac{2}{5}$÷2=	（$\frac{1}{2}$-$\frac{1}{6}$）×12=

Answer 1

分析 根據(jù)整數(shù)小數(shù)分數(shù)的加減乘除法的計算方法解答即可．

解答

解：8-3.4=4.6	1.75+25=26.75	$\frac{5}{9}$÷$\frac{1}{3}$=$\frac{5}{3}$	$\frac{1}{6}$×13-$\frac{1}{6}$=2	0.4×9×25=90
$\frac{1}{4}$÷4=$\frac{1}{16}$	3.14÷6.28=$\frac{1}{2}$	$\frac{4}{5}$×$\frac{5}{9}$=$\frac{4}{9}$	2÷$\frac{2}{5}$-$\frac{2}{5}$÷2=$4\frac{4}{5}$	（$\frac{1}{2}$-$\frac{1}{6}$）×12=4

點評 直接寫得數(shù)數(shù)，注意數(shù)據(jù)特點和運算符號，細心解答即可．