This is Common Core (some standards on 2nd slide)
If you allow students to access this themselves (granted you are 1:1), students learn on their own.
This is foundational, and its purpose is to build students up and feel successful with the distributive property.
If they didn't get order of operations or area models, that might happen here too.
Follow this up with a short 4-5 question quiz. An extra practice sheet for those who need it. Then another 4-5 question quiz for students to improve.