In this bundle, you'll receive 12 presentations, each containing 5 problems from varying math objectives. I used to use these in my 5th grade class, but as standards have become more rigorous I think this bundle is well-suited for 4th grade students.
Multiple choice answers will animate "in" but feel free to offer them to students or not, depending on their skill set and your opinion about multiple choice practice. (I usually didn't animate the answers in until all students had come up with an answer without being given choices.)
The image files will give you a good idea of the presentation contents and "look." While not the pinnacle of deep problem-solving, these sets give you a quick, visual way to review a variety of skills with your class.