"621-367等于几"...621-367等于几

　"621-382等于几"...621-382等于几

　"621-348等于几"...621-348等于几

　"627+195等于几"...627+195等于几

　"621+179等于几"...621+179等于几

　"621-43等于几"...621-43等于几

　"621+21等于几"...621+21等于几

　"621+848等于几"...621+848等于几

　"629-227等于几"...629-227等于几

　"625+118等于几"...625+118等于几