"638+93等于几"...638+93等于几

　"638+297等于几"...638+297等于几

　"638+8103等于几"...638+8103等于几

　"638-374等于几"...638-374等于几

　"638+362等于几"...638+362等于几

　"638-193等于几"...638-193等于几

　"763+933等于几"...763+933等于几

　"638+94等于几"...638+94等于几

　"638-549等于几"...638-549等于几

　"638+93等于多少"...638+93等于多少