把下面各循环小数化成分数:0.777.,0.147147.,0.31818.
问题描述:
把下面各循环小数化成分数:0.777.,0.147147.,0.31818.
答
0.777=7/9
0.147147=147/999
0.31818=0.3+0.01818=3/10+18/990=297/990+18/990=315/990=35/110=7/22