This possessive nouns worksheet works well as an assessment, homework, or in-class assignment. This is a 5 part worksheet, with 25 TOTAL QUESTIONS. In the first part, students are asked to supply the apostrophe and the "s" to make the nouns possessive in the sentences given. The next part is the same as the first, but with plural nouns that do not end in "s." The next part is similar, but with plural nouns that do end in "s." The 4th part covers joint ownership and students must supply the apostrophe and the "s" to make the nouns possessive in the sentences. The last part covers separate ownership of possessive nouns.