Class 9 is when the rigour of academics begins, as it is the class right before the 10th board year and it is the time to get serious about our studies. What we learn in class 9 maths is fairly simple, but it is important to attain a good understanding of the same, because it acts as a base for mathematics, and even other subjects, in higher classes. For example, the basics of statistics that you will learn in chapter 14 will be helpful if you choose to take economics in class 11. Another example is number systems, which you will learn in NCERT class 9 maths chapter 1, and it is important to know this because you will use number systems in concepts of electronics if you choose physics, and further on in maths classes. Thus, it is incredibly important to find a good base in mathematics starting with the NCERT solution maths class 9 chapter 1, Number Systems. You can also download NCERT Solution for Class 9 Science, Maths solutions, and solutions of other subjects that are available on Vedantu only.