In Grade 8, students are expected to have a solid understanding of the number system and how to apply it to solve a range of mathematical problems. The Common Core Standards for Mathematics emphasize the importance of the number system as a fundamental skill for success in higher-level mathematics courses.

Grade 8 students should be able to work with rational and irrational numbers, as well as understand the relationships between them. They should be able to solve problems involving exponents and scientific notation, and apply these concepts to real-world situations.