0.21515...=（215-2）/990=213/990=71/330
6.35333...=6+0.35333...=6+（353-35）/900=6+318/900=6+79/225
0.1555...=（15-1）/90=7/45
0.91111...=（91-9）/90=41/45
六年级数学题将混循环小数化分数,急
0.21515...=（215-2）/990=213/990=71/330
6.35333...=6+0.35333...=6+（353-35）/900=6+318/900=6+79/225
0.1555...=（15-1）/90=7/45
0.91111...=（91-9）/90=41/45