"621-382等于几"...621-382等于几

　"621+848等于几"...621+848等于几

　"621-367等于几"...621-367等于几

　"627-348等于几"...627-348等于几

　"614-338等于几"...614-338等于几

　"621-295等于几"...621-295等于几

　"658+342等于几"...658+342等于几

　"615-348等于几"...615-348等于几

　"612-378等于几"...612-378等于几

　"624-328等于几"...624-328等于几