This resource provides a pre-test to determine student target levels on the use of multiplicative and additive comparison, and writing appropriate equations, in solving word problems. From the scores of the pre-test, appropriate practice and activities are provided in order to differentiate the learning activities / centers. The students 'move' through the resource activities to master the standard. Included are exit tickets at each of the 4 target mastery levels. Answer key is provided to all activities.