Question

5．直接寫出得數(shù)

$\frac{1}{4}$×$\frac{2}{5}$=	$\frac{5}{6}$×1.2=	45×$\frac{3}{5}$=	9×$\frac{7}{18}$=
$\frac{2}{3}$×$\frac{9}{10}$=	$\frac{4}{25}$×100=	1.8×$\frac{1}{6}$=	$\frac{4}{11}$×$\frac{11}{4}$=

Answer 1

分析 根據(jù)分數(shù)乘法的計算法則，依次進行解答即可．

解答 解：

$\frac{1}{4}$×$\frac{2}{5}$=$\frac{1}{10}$	$\frac{5}{6}$×1.2=1	45×$\frac{3}{5}$=27	9×$\frac{7}{18}$=3.5
$\frac{2}{3}$×$\frac{9}{10}$=$\frac{3}{5}$	$\frac{4}{25}$×100=16	1.8×$\frac{1}{6}$=0.3	$\frac{4}{11}$×$\frac{11}{4}$=1

點評 靈活掌握分數(shù)乘法的計算法則，是解答此題的關(guān)鍵．