This set includes 4 versions of a matrix operations review. Each worksheet contains 15 problems. The worksheet starts out by asking students to identify the size and specific elements from a set of given matrices. Then the worksheet moves into to addition, subtraction, and scalar multiplication. Some problems have mismatched dimensions and are not possible. There are also matrix multiplication problems as well. Some of the matrix multiplication problems have variables to prevent students from using a calculator to solve. The variations in the worksheets can be used a multiple of ways. If you have students sitting in groups you can give each student a different version and allow them to help each other as needed. Then once they have finished, you can have students group up with others that have the same version to check answers.