Substitution MatchingMania is a fun, cooperative learning, strategy game that can be applied in multiple ways. The students are given 24 expressions. Students will either simplify by order of operations or substitution. When they are done simplifying, they match the problem to its answer.
There are numerous other activities similar to this one in my TPT store. These include:
Algebra I MatchingMania
Middle School MatchingMania
These activities can be used in lieu of your assignment or as an extension of the assignment.