Question

19．把下面五個(gè)數(shù)按從大到小順序排列0.2424、$\frac{6}{25}$、$\frac{2}{5}$、0.241、0.244：$\frac{2}{5}$＞0.244＞0.2424＞0.241＞$\frac{6}{25}$．

Answer 1

分析 幾個(gè)不同形式數(shù)比較，一般先統(tǒng)一化成小數(shù)，然后比較．

解答 解：$\frac{6}{25}$=0.24，$\frac{2}{5}$=0.4；
0.4＞0.244＞0.2424＞0.241＞0.24，即$\frac{2}{5}$＞0.244＞0.2424＞0.241＞$\frac{6}{25}$．
故答案為：$\frac{2}{5}$＞0.244＞0.2424＞0.241＞$\frac{6}{25}$．

點(diǎn)評(píng) 此題主要考查小數(shù)大小的比較方法的應(yīng)用．