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CBSE Class 7 Maths: Algebraic Expressions Chapter 12 Notes

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CBSE Class 7 Maths: Algebraic Expressions Chapter 12 Notes

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Questions and Answers

What is the definition of a constant in algebraic expressions?

A quantity that is unknown

A quantity that can vary

A quantity which has a fixed value (correct)

A quantity with a changing value

Which term in the expression 10xy+4y has the coefficient of 10?

xy (correct)

What are parts of an expression formed separately first and then added known as?

Coefficients

Constants

Variables

Terms (correct)

Which mathematical concept relates to the successor of a natural number?

Number Patterns Signup and view all the answers

In algebraic expressions, what is the coefficient of '2n' if n represents a natural number?

2 Signup and view all the answers

In the expression 4xy - 2x + 7, what is the coefficient of the second term, -2x?

-2 Signup and view all the answers

Which of the following terms is a binomial?

3x + 6y Signup and view all the answers

What is the number of terms in the expression 5p^2 + 3pq - 2r + 7?

3 Signup and view all the answers

If n denotes the number of sides of a polygon, what is the number of diagonals that can be drawn from one vertex?

(n - 3) Signup and view all the answers

Which of the following expressions is a monomial?

-5m Signup and view all the answers

Study Notes

Algebraic Expressions

A constant in algebraic expressions is a term with no variable.

Terms and Coefficients

In the expression 10xy + 4y, the term with the coefficient of 10 is 10xy.
The coefficient of '2n' is 2, where n represents a natural number.
In the expression 4xy - 2x + 7, the coefficient of the second term, -2x, is -2.

Expressions and Terms

Parts of an expression formed separately first and then added are known as terms.
The expression 5p^2 + 3pq - 2r + 7 has 4 terms.

Mathematical Concepts

The concept of successor relates to natural numbers.

Polynomials and Binomials

A binomial is an expression with two terms.

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Description

Get detailed notes for Class 7 Maths Chapter 12: Algebraic Expressions covering topics like introduction to algebraic expressions, formation of algebraic expressions, addition and subtraction of algebraic equations, and more. Also includes frequently asked questions for better understanding.