## CBSE Class 7 Maths Chapter 10 Important Questions - Algebraic Expressions - (FREE PDF Download)

## FAQs on Important Questions for CBSE Class 7 Maths Chapter 10 - Algebraic Expressions

1. Is 8 an Algebraic Expression?

According to the definition of algebraic expression, an algebraic expression is formed with the help of operators i.e. addition, subtraction, multiplications, and divisions. As we can see there aren’t any operators used in 8, therefore 8 is not an algebraic expression.

2. How Can the Concepts of Algebra be Used in Geometry?

Geometry is that branch of mathematics that deals with the dimensions, sizes, shapes, and angles of a figure. While solving sums of geometry, we are often asked to find the perimeter and area of a certain figure. We can solve this easily with the help of algebra. We can find the perimeter using the following formulae:

( l is the length of each side)

Square= 4l

Equilateral Triangle= 3l

Regular Pentagon= 5l

Regular Hexagon= 6l

We can also find the area of the figures using the following formulae:

Square: area= l² (l= length of each side)

Rectangle: area= l*b (l is the length and b is the breadth)

Triangle: area= (b*h)/2 (b and h are the base and height of the triangle respectively)

3. How is Algebra Useful in Our Day to Day Life?

Without our understanding, we have used algebra in many different aspects of our lives. When you go to a store to buy a bunch of goods, you prefer to use algebra out of unconsciousness.

When cooking, we often use algebra since it requires the measurement of many ingredients. It is also used to resolve business solutions as well as to solve certain financial problems. The principles and skills that algebra develops significantly contribute to our higher education.

4. Who Coined the Term "Algebra"? Who Invented Algebra?

The word algebra originated from the Arabic word al-jabr, which has its roots in the title of a 9th-century manuscript written by the mathematician Al-Khwarizmi.

Algebra was invented in the 9th century by Muhammad al-Khwarizmi, a mathematician and an astronomer. Muhammad al-Khwarizmi is also known as the "Father of Algebra".

His work in this field contributed to the dilemma of land distributions, distributing salaries, and rules of inheritance. His works on developing the concept of algorithms are quite remarkable. Therefore, he is also known as the "grandfather of computer science".

5. What are the main topics that are covered in Chapter 10 of Class 7 Maths?

NCERT Chapter 10 of Class 7 Maths mainly explains algebraic expressions and how they are formed by performing various operations of expressions and constants. The value of expression depends on the variables used in the equation. This Chapter covers different algebraic expressions such as term, coefficient, monomial, binomial, trinomial, polynomial and also provides certain rules of mathematics to use proper techniques for specific types of questions to get correct answers.

6. Is it necessary to learn all the questions provided in Chapter 10 of Class 7 Maths?

Yes, It is essential to learn all the provided questions in Chapter 10 of Class 7 Maths as all these questions are framed in a way that each of them deals with a unique type of problem, and no two questions are of the same type. So by learning and solving all the questions, one can understand the concept of the Chapter clearly and easily solve the problems in this Chapter. The important questions for Chapter 10 of Class 7 Maths are available free of cost on the Vedantu website and the Vedantu app.

7. What are algebraic expressions and how are they formed, according to Chapter 10 of Class 7 Maths?

Algebraic expressions are the result of variables and constants. When a variable and constant are processed with certain algebraic operations like subtraction, addition, division, and multiplication, it gives the equation an algebraic expression. Variables are unknown values that are not fixed and are usually denoted with alphabets like X, Y, and Z, whereas constants are the known values that are fixed, for example: 6, 25, 89, etc.

8. What are the terms of algebraic expression, according to Chapter 10 of Class 7 Maths?

An algebraic expression is a complete equation, and terms are the components that make that equation complete. If we consider an equation (2x + 10y), here the complete equation represents an expression, and components of this expression 2X and 10Y are the terms of expression if we further separate them into 2, X, 10, and Y now each of these become factors of the term. Factors combine to make terms, and terms combined make expressions.

9. How many exercises are there in NCERT Chapter 10 of Class 7 Maths?

In NCERT Chapter 10 of Class 7 Maths:

Exercise 10.1 has seven questions.

Exercise 10.2 has six questions.

Exercise 10.3 has 10 questions

Exercise 10.4 has two questions.

Each of the questions given in the above-mentioned exercises is framed in a specific way to address different problems. Students should solve and practice all the questions in order to get a clear understanding of the concept and solve the question in the chapter