NCERT Solutions for Class 7 Maths Chapter 1 Integers

Integers are the number that can be positive, negative or zero, but it cannot be a fraction. These numbers are used to perform arithmetic operations like addition, subtraction, multiplication and division. Integers help in evaluating the efficiency in positive and negative numbers in every field.

Some examples of real-life integers are temperature, sea level, etc. Integer is a whole number written without factorial component.for ex : -7,-5,1,7 etc. It is denoted by letter Z. In Ex 1.1 you will be reawakened about the number line, presentation of integers in the number line, arranging integers in ascending and descending order, a positive and negative integer, addition & subtraction of positive and negative integers and representing it in the number line. In Ex 1.2, you will learn about the property of Addition and Subtraction of Integers. You will learn how integers' addition is commutative for integers, but the subtraction of integers is not. In Ex 1.3 you will learn about the property of multiplication of integers and division of integers. The main topics and sub-topics of this chapter are-:

• Introduction
• Properties of subtraction and addition of integers
• Closure under subtraction and addition
• Associative, commutative and distributive property
• Multiplication of a positive and negative integer
• Multiplication of integers, the multiplicative identity
• Multiplication closure
• Division of integers, Properties of the division of integers

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