小明游泳,第一次游了19米,第二次游了10米,小明两次一共游了多少米?-u-C)Y(Q-I8o9H5F;Q8{4P
算式:提示+U3T.S0V3o-_(N(W4z;U4D-u-C)Y(Q-I8o9H5F;Q8{4P
答:小明两次一共游了+f(L(]3[)f2t2`+H7@4o+I2n米。-u-C)Y(Q-I8o9H5F;Q8{4P