kevincheng520 wrote:我兒子小四的數學考卷...(恕刪)
mingchao_liu wrote:2又3/8=19/8...(恕刪)
henry999 wrote:2又3/8*9=17...=22-5/8(恕刪)
sky112180 wrote:請問關八分之五什麼事...(恕刪)