妈妈在超市买了5千克鱼,每千克12元;买了4千克牛肉,每千克15元。妈妈一共花了多少元钱?1P'z2m/`6K7x
算式:提示8D8E,B.s'E;c;t-`,c(O2V1P'z2m/`6K7x
答:妈妈一共花了6^0g1S3z3d'^*M,f+z元。1P'z2m/`6K7x