小明做数学题，每行做5道，做了2行，一共做了多少道？(d4r2O6q8z*P9b
算式：提示(E5C2a+[2a:t)z(V0M7E(g5j(d4r2O6q8z*P9b
答：一共做了2k0n6p;F+E5f:z7J*c道。(d4r2O6q8z*P9b