RS Aggarwal Class-7 Algebraic Expressions ICSE Maths Goyal Brothers

RS Aggarwal Class-7 Algebraic Expressions ICSE Maths Goyal Brothers Prakashan Chapter-13 Solutions. We provide step by step Solutions of Exercise / lesson-13 Algebraic Expressions  for ICSE Class-7 RS Aggarwal Mathematics.

Our Solutions contain all type Questions with Exe-13 A, Exe-13 B, Exe-13 C(MCQ) with Mental Maths to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-7 Mathematics.

Board ICSE
Publications Goyal brothers Prakshan
Subject Maths
Class 7th
Chapter-13 Algebraic Expressions
Writer RS Aggrawal
Book Name Foundation
Topics Solution of Exe-13 A, Exe-13 B, Exe-13 C(MCQ) with Mental Maths
Academic Session 2021-2022

RS Aggarwal Class-7 Algebraic Expressions ICSE Maths Goyal Brothers Prakashan Chapter-13 Solutions


-: Select Topic :-

Exe-13 A,

 Exe-13 B,

 MCQs Exe-13 C,

 Mental Maths


Introduction to Algebraic Expressions

Constant

Constant is a quantity which has a fixed value.

Terms of Expression

Parts of an expression which are formed separately first and then added are known as terms. They are added to form expressions.

Coefficient of a term

The numerical factor of a term is called coefficient of the term.

Writing Number patterns and rules related to them

If a natural number is denoted by n, its successor is (n + 1).
If a natural number is denoted by n, 2n is an even number and (2n+1) an odd number.

Definition of Variables

Any algebraic expression can have any number of variables and constants.

Variable

A variable is a quantity that is prone to change with the context of the situation.

Factors of a term

Factors of a term are quantities which can not be further factorised. A term is a product of its factors

Formation of Algebraic Expressions

  • Variables and numbers are used to construct terms.
  • These terms along with a combination of operators constitute an algebraic expression.
  • The algebraic expression has a value that depends on the values of the variables.

Like and Unlike Terms

Like terms

Terms having same algebraic factors are like terms.

Unlike terms

Terms having different algebraic factors are unlike terms.

Monomial, Binomial, Trinomial and Polynomial Terms

Types of expressions based on the number of terms

Based on the number of terms present, algebraic expressions are classified as:

Monomial: An expression with only one term.

Binomial: An expression which contains two, unlike terms.

Trinomial: An expression which contains three terms.

Polynomials : An expression with one or more terms.

Addition and Subtraction of Algebraic Equations

  • Mathematical operations like addition and subtraction can be applied to algebraic terms.
  • For adding or subtracting two or more algebraic expression, like terms of both the expressions are grouped together and unlike terms are retained as it is.
  • Sum of two or more like terms is a like term with a numerical coefficient equal to the sum of the numerical coefficients of all like terms.
  • Difference between two like terms is a like term with a numerical coefficient equal to the difference between the numerical coefficients of the two like terms.

Exe-13 A, RS Aggarwal Class-7 Algebraic Expressions ICSE Maths Goyal Brothers Prakashan

Page 145-146

Question 1 :

Identify monomials, binomials and trinomials from the following algebraic expressions.

(i)………

(ii)……….

(iii)………

(iv)………

(v)………

(vi)……..

Question 2 :

Write down the numerical as well as ………………………… monomials.

(i)…………

(ii)………

(iii)………..

(iv)……….

(v)……….

(vi)………….

Question 3 :

……………………..

………………………

……………………..

Question 6 :

Identify which of the following …………………… write their degrees :

(i)……..

(ii)…….

(iii)……..

(iv)………..

(v)………..

(vi)………..

(vii)………


 Exe-13 B, RS Aggarwal Class-7 Algebraic Expressions ICSE Maths Goyal Brothers Prakashan

Page 149-150

Question 1 :

Add the following expressions :

(i)……….

(ii)……..

(iii)………

(iv)………

(v)………..

(vi)………..

(vii)…….

(viii)……….

(ix)……….

Question 2 :

Simplify :

(i)……….

(ii)……..

(iii)………

(iv)………

(v)………..

Question 3 :

The two adjacent sides of a rectangle …………………….. find it’s perimeter

Question 4 :

…………………

………………..

……………….

Question 12 :

How much is …………………….

Question 13 :

……………………

…………………….

………………….

Question 15 :

The perimeter of a rectangle is …………………….. find the other side.


 MCQs Exe-13 C,

Multiple Choice Questions

Page 150

Choose the correct option in each of the following

Question 1:

Which of the following is a literal ?

Question 2 :

The coefficient of ………………….

Question 3:

Which of the following is a pair of like terms ?

Question 4:

……………………….

……………………….

………………………

Question 9 :

The value of the expression ……………………….

Question 10:

The sum of the polynomials ………………….


 Mental Maths Chapter-13

Page 151

Question 1:

Fill in blanks

(i)……….

(ii)……..

(iii)………

(iv)………

(v)………..

(vi)………..

(vii)…….

(viii)……….

(ix)……….

(x) …….

Answer 1 :

(i) Variable

(ii) 5

(iii) terms

(iv) 0

(v) literal coefficients

(vi) x/b

(vii) having 4

(viii)  = 2x² -(1/2)y + 4xy

(ix) non-negative integers.

(x)  (mn – 2n²)

Question 2:

Write true (T) or false (F) :

Answer 2:

(i) True

(ii) True

(iii) True

(iv) False

(v) True

(vi) True

 

–: End of RS Aggarwal Class-7 Algebraic Expressions  Solutions :–

Return to- RS Aggarwal Solutions for ICSE Class-7 Goyal Brothers Prakashan


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