Number System

This chapter talks about the natural number, whole number, integers, even number, odd number, prime number, and composite number. It presents formulae that are useful for quick multiplication and division. MCQs with solutions are also provided.

This chapter focuses on the concepts of whole and natural numbers with their representation. It also discusses the distributive property with examples and exercises for better understanding.

Through this chapter, we will learn the concept of integers in detail. It highlights the representation of integers on the number line. It provides us with the solved examples based on the application of properties of integers.

This chapter unfolds the notion of divisibility rule of 2, 3, 5, 6, 9 and 10. Further, it explores the concept of factors, multiples, prime numbers and composite numbers. We will also study the relationship between LCM and HCF through examples.

This chapter talks about fractions. It teaches us to add mixed fractions and also to perform multiplication and division on fractions. A complete guide in making fraction calculations easier is also highlighted.

This chapter tells us about decimals. We will learn the concepts of tenths and hundredths. It helps us to find the use of decimals in money, length, and weight-related problems. The problems on addition and subtraction of decimals are discussed too.

This chapter tells us about different types of sets and the way of representing them with the help of examples. We will also be able to perform some basic operations on the sets and learn the laws of the algebra of the sets.

Through this chapter, we will understand the various terms related to ratio and proportion. It provides us with some practice questions based on finding the ratios, comparing numbers, finding the ratio of shaded portion to unshaded in a figure, etc.

Through this chapter, we will understand the concepts related to percentage. It discusses the key concepts and idea of percent as a fraction with 100 as the denominator. It also highlights how to find the percentage of a given number.