# CBSE Class 7 Maths Revision Notes Chapter 4

## CBSE Class 7 Mathematics Revision Notes Chapter 4 – Simple Equations

The Class 7 Mathematics Chapter 4 Notes are designed for students preparing for the final examinations. Students should focus on subjects such as mathematics from the start, as they are considered building blocks for higher classes.  Simple language with a proper explanation of each aspect is given in the CBSE revision notes. Candidates can rely on these notes as they are created according to the latest CBSE guidelines and NCERT books. Extramarks recommends that students read the textbook properly and solve the numerical questions to score well in the examination. In addition to the revision notes, one can access CBSE sample papers, CBSE previous year question papers, and CBSE extra questions, including many more from the official website Extramarks.

### Simple Equations

A simple equation is a combination of variables, constants, and mathematical operations, such as division, multiplication, subtraction, and addition, that are balanced by an equal sign. The left side of the equation is known as the LHS, and the right side of the equation is called the RHS. Any letter from ‘A to Z’ can represent a variable in any form z. For example, x + 3 = 8, so the variable in this equation is x. The general form of a simple equation can be written as ax + b = c.

Variables:

A variable is any quantity, number or characteristic that is measurable and can be counted. A data item can also be termed a variable. Different examples of variables are vehicle type, eye colour, class grades, capital expenditure, place of birth, business expenditure, business income, sex, age, etc.

Constant:

The values will remain constant throughout the equation. We can also say that a symbol with a fixed numeric value is known as a constant.

Equal to sign:

An equal indicates a balanced status between the left and right sides of the equation.

### Solving Simple Equations

Most of the equations to be solved require a simple rearrangement of the variables and constants to get the solution. To get a better understanding of the concept of rearrangement, we can refer to the simple steps given below. They are as follows:

• To start with solving, one should always try to balance the equation using any of the mathematical operations. You should focus on preserving the relationship between the left and right-hand sides.
• If you are doing simultaneous operations on both sides of the equations, then your equation will be correct. To find an accurate solution, you should always try to balance the equations properly.
• You can also solve simple equations using the BODMAS rule. While solving the equation, try to remember the required formulas and do the calculations accurately to get the desired solutions.
• Always try to simplify the equations properly through multiplication, division and addition or subtraction of the terms.

### Advantages of Revision Notes of CBSE Class 7 Chapter 4

One can get the following advantages from the Class 7 Chapter 4 Mathematics Notes.

• Candidates will be able to revise the important questions and formulas accurately.
• Students can have a quick revision of the important concepts which are essential from the examination point of view.
• The CBSE revision notes are extremely important as they can help the students gain good marks in the final examination. Proper revision of the notes will help the students analyse their mistakes and rectify them properly.
• All the topics are systemically covered in the Chapter 4 Mathematics Class 7 Notes, so candidates can rely on them for exam preparation.

### Conclusion

The Class 7 Chapter 4 Mathematics Notes include all the important questions and topics required to score well in the examination. The revision notes are created using an easy-to-use language that will help the candidates understand the concepts. One should revise all the formulas before the examination, especially in subjects like mathematics. Hence, the important formulas and concepts related to it are accurately covered in the CBSE revision notes. The notes will provide the students with a summary that can be read before the examination for quick revision.

### 1. Is Chapter 4 Mathematics Class 7 Notes difficult to understand?

Candidates should not worry about the difficulty level as easy-to-use language is used to prepare the revision notes for the students. Also, all the topics are covered which will help students in revising properly.

### 2. How many questions are there in chapter 4 of Mathematics?

In the NCERT books, there are a total of four exercises and eighteen questions. A detailed overview is given below

Exercise 4.1: Six questions with subdivisions in each of them.

Exercise 4.2: Four questions with subdivisions in each question.

Exercise 4.3: Four questions in total.

Exercise 4.4: In total, there are four questions with further subdivisions.

So, in total there are 18 questions.