From the LDS Newsroom blog:
A respect for the diverse beliefs and unique contributions of all the world’s faiths is one of the hallmarks of Mormonism.Read the entire article at the LDS Newsroom.
...The spiritual and physical needs of the world require goodwill and cooperation among different faiths. Each of them makes a valuable contribution to the larger community of believers. In the words of early Church apostle Orson F. Whitney, “God is using more than one people for the accomplishment of his great and marvelous work. The Latter-day Saints cannot do it all. It is too vast, too arduous, for any one people.”
...It is important to note that interfaith cooperation does not require doctrinal compromise. Though the Church asserts its ecclesiastical independence and recognizes its doctrinal differences, this does not prevent it from partnering with other faiths in charitable projects. These efforts are based on universal values.