一根绳子长3米,5根绳子长多少米?3\.k,K6u:W5i*K4k9l8j;[2i;j
算式:提示1\1T(L,M)m2t-]'d:I,K'].H)f7J7]3F)F3\.k,K6u:W5i*K4k9l8j;[2i;j
答:5根绳子长*O*R1p1\8N0b4K8J米。3\.k,K6u:W5i*K4k9l8j;[2i;j