跑道长85米 ,同学们跑接力,每组5人,每人跑一个往返。每组要跑多少米?8B2]7g5P)U8i5t5E2T)P;P(B2j.^:h
算式:提示7{)B7@*j1[(R6X8B2]7g5P)U8i5t5E2T)P;P(B2j.^:h
答:每组要跑4Z*w4g:V2P米。8B2]7g5P)U8i5t5E2T)P;P(B2j.^:h