If you are looking for a worksheet and assessment to align with the Common Core Standards you have found it! The new Common Core Standards approach the distributive property in a new way; students are expected to be able to identify equivalent expressions. There are a lot of worksheets available on the web that have students solve distributive problems, but it is hard to find one asking students to find equivalent expressions.
This worksheet contains 10 problems where students must give the equivalent and 2 story problems. The assessment includes 10 problems: 5 multiple choice including one problem where they must explain their reasoning and 5 problems to solve.
As always, your feedback is greatly appreciated!