This resource is contains 20 task cards that fourth graders can use to review multiplicative comparison, factors and multiples, the relationship between multiplication and division, and multi-step word problems.
Just print the cards, cut, and hang them around the classroom. Make copies of the student answer sheets for them to use to put their answers to each problem, and check with the included answer key. You may want to provide students with a treat or small prize for completing the task cards correctly.
I'm using the set for review before our chapter test, but I will also use them as review during the year from time to time.