1. 7th
2. Maths

# Class 7 Maths

15 Chapters

Class 7
CBSE

## Overview

Class 7 Maths has a lot for a student to practice and learns new concepts of it. Moreover, it helps students in their unlimited need that is scoring good marks. Besides, the mathematics book contains 15 chapters. Chapter 1 is about integers where their properties and operations will be taught. Chapter 2 explains fractions and decimals along with the application of addition and subtraction on them. Chapter 3 describes how to handle data like collecting, organizing, data, etc. Chapter 4 deals with setting up and solving an equation. Chapter 5 defines lines and angles such as intersecting and transversal lines, linear pair, supplementary and complementary angles, etc. Chapter 6 explains triangles and their properties and types of triangles. Chapter 7 teaches the Congruence of Triangles, which means those figures that have the same shape and size. Chapter 8 is about comparing quantities such as equivalent ratios, percentage, converting fractional numbers, etc. Chapter 9 deals with positive and negative rational numbers, rational numbers on a line, etc. Chapter 10 covers practical geometry such as drawing line segments, etc. Chapter 11 teaches areas and perimeters of plain figures. Chapter 12 explains algebraic expressions, coefficients, etc. Chapter 13 teaches exponents and the power of numbers. Chapter 14 describes the symmetry of shapes. And chapter 15 covers the visualization of solid shapes.

### Explore all Chapters

IntegersFractions and DecimalsData HandlingSimple EquationsLines and AnglesThe Triangle and Its PropertiesCongruence of TrianglesComparing QuantitiesRational NumbersPractical GeometryPerimeter and AreaAlgebraic ExpressionsExponents and PowersSymmetryVisualising Solid Shapes

### Chapter 1 : Integers

Suppose you take a jar and add 5 chocolates into the jar. It is represented by a positive value +5. Now remove 5 chocolates from a jar so this is represented by a negative value -5.  But can you remove half of or a third of chocolate? NO!  So here the integer always represent the number of chocolates added or taken.

Recall IntegersAddition and Subtraction of IntegersProperties of Addition and Subtraction of IntegersMultiplication of Integers and Its Properties

### Chapter 2 : Fractions and Decimals

Can you guess a pastry is what fraction of a cake? And that Paisa comprises a decimal part of a Rupee? Well, you will come across a plenty of daily examples where fractions and decimals are used. In this section, let's study about their properties and operations, like their multiplication and division.

Recalling Basics of FractionsMultiplication of FractionsRecalling Basics of DecimalsDivision of Decimals

### Chapter 3 : Data Handling

Your life is surrounded by numbers. Marks you scored, runs you made, your height, your weight. All these numbers are nothing but data. Here we will learn what is data and how to organise and represent this data in forms of graphs and charts. We will also come across the concept of probability. Let us get started.

Arithmetic Mean and RangeMode and MedianBar GraphsChance and Probability

### Chapter 4 : Simple Equations

An equation is a basic building block of a mathematical problem. Problem statements can be turned into simple equations, which help us to solve them in an easier and a quick manner. If 3 apples and 4 oranges cost 100 rupees, can you make an equation out of it? Let's study more about the mathematical equations.

Equations in One VariableSolution of an Equation using Trial and Error MethodSolving an Equation

### Chapter 5 : Lines and Angles

Do you remember what was the first thing you did with a pencil when you were a kid? Surely drawing random lines, isn't it? Let us try understanding the concept of lines in mathematics. In this lesson, we will also learn what is an angle and its types. So let us study lines and angles all together.

Complementary and Supplementary AnglesAdjacent Angles, Vertically Opposite Angles and Linear PairsAngles made by TransversalsTransversals to Parallel Lines

### Chapter 6 : The Triangle and Its Properties

Do you know more and more Triangle shapes are being used in construction? Although they are more difficult to construct than squares or rectangles, they offer more stability and strength. Let’s learn some such interesting concepts about Triangles and the properties of triangle.

Recalling Basics of Triangles and Its TypesMedians and Altitudes of a TriangleExterior Angle of a TriangleAngle Sum PropertyIsosceles and Equilateral Triangles

### Chapter 7 : Congruence of Triangles

How do you think the scientists measured the height of Mount Everest? Do you think they went about it with a tape measure? Well of course not. They probably used many fascinating concepts in Geometry. Let's learn here some of these interesting concepts about Triangles...

Introduction to CongruenceCriteria for Triangle Congruence

### Chapter 9 : Rational Numbers

What is a number line? And how exactly are numbers represented on this line? Well, the manner of the representation of numbers on a number line is what we call a number system. Let us find out some more interesting concepts about number systems.

Introduction to Rational NumbersRational Numbers on the Number LineComparing Rational NumbersOperations on Rational Numbers

### Chapter 10 : Practical Geometry

Constructions of Parallel LinesConstructions of Triangles

### Chapter 11 : Perimeter and Area

Perimeter and Area of Squares and RectanglesArea of a ParallelogramArea of a TrianglePerimeter and Area of a CircleConversion of Units

### Chapter 12 : Algebraic Expressions

Imagine it's your best friend's birthday and he/she hosts a party which is at 7 PM. You suddenly get caught in traffic. Now, you know a shortcut to reach the venue faster but you can't move until the signal's clear. What do you do? We use algebra and algebraic expressions. But what are these terms? Let us study them.

Terms of an Algebraic ExpressionAdding and Subtracting Algebraic ExpressionsFinding the Value of an ExpressionUsing Algebraic Expressions - Formulas

### Chapter 13 : Exponents and Powers

When we have to repeatedly multiply a number by itself, we raise it to a power. This is known as Exponent. The power in the exponent represents the number of times that we want to carry out the multiplication. In this chapter, we will learn about powers, exponents and their peripherals.

Introduction to ExponentsUsing ExponentsLaws of ExponentsApplications of Laws of ExponentsStandard Form

### Chapter 14 : Symmetry

What is Symmetry? Ever noticed, that some things are symmetric? For example, the letters H, A, M, all look the same left and right. The letters B, C, D are the same along a horizontal line. The letter X is symmetric both horizontally and vertically. A perfectly round O is symmetric around its centre.