# Grade 7 the Multiplication of Expression and an Introduction to Identities Worksheet (For CBSE, ICSE, IAS, NET, NRA 2022)

Get top class preparation for CBSE/Class-7 right from your home: get questions, notes, tests, video lectures and more- for all subjects of CBSE/Class-7.

## (1) Write in How Many Terms Each Simplified Algebraic Expression Has. Then Tick ‘M’ if the Expression is a Monomial, ‘B’ if It is a Binomial and ‘T’ if It is a Trinomial

 Expression Number of terms after simplification Monomial/Binomial/Trinomial (a) (b) (c) (d)

(a)

(b)

(C)

(d)

(a)

(b)

(C)

(d)

(a)

(b)

(a)

(b)

(a)

(b)

(a)

(b)

(a)

(b)

(c)

(a)

(b)

(a)

(b)

## (11) Use the Identity (A + B) (A – B) = a2 – B2 to Match the Expressions in Column a to the Expressions in Column B

 Column-A Column-B (a) ( (b) (c)

(a)

(b)

(a)

(b)

## (14) Use an Identity to Answer These Questions

(a)

(b)

• Given expression:

• So, Simplest form of given expression
• There are two number of terms in given algebraic expression as shown below.
• Therefore this algebraic expression is Binomial.
 Expression Number of terms after simplification Monomial/Binomial/Trinomial (a)

• Given expression:

• So, Simplest form of given expression
• There are two number of terms in given algebraic expression as shown below.
• Therefore this algebraic expression is Binomial.
 Expression Number of terms after simplification Monomial/Binomial/Trinomial (b)

• Given expression:

• So, Simplest form of given expression
• There are three number of terms in given algebraic expression as shown below.
• Therefore this algebraic expression is Trinomial.
 Expression Number of terms after simplification Monomial/Binomial/Trinomial (C)

• Given expression:

• So, Simplest form of given expression
• There are three number of terms in given algebraic expression as shown below.
• Therefore this algebraic expression is Trinomial.
 Expression Number of terms after simplification Monomial/Binomial/Trinomial (d)

• Given expression:

• Therefore;

• Given expression:

• Therefore;

• Given expression:

• Therefore;

• Given expression:

• Therefore

• Given expression:

• Therefore

• Given expression:

• Therefore

• Given expression:

• Therefore

• Given expression:

• Therefore

• Given binomial expression:

• Therefore;

• Given binomial expression:

• Therefore;

Given binomial expression:

• Therefore;

Given binomial expression:

• Therefore;

• Given that:

• So,

• Now,

• So,

• Given that:

• So,

• Now,

• So,

• Given that:

• So,

• Now,

• So,

• Given that:

• So,

• Now,

• Therefore;

• Given that:

• We know identities that

• Compare this identities with given expression; so we have

• Now, as per the identities

• Therefore;

• Given that:

• We know identities that

• Compare this identities with given expression; so we have

• Now, as per the identities

• Therefore;

• Given that:

• We know identities that

• Compare this identities with given expression; so we have

• Now, as per the identities

• Therefore;

• Given that:

• We know identities that

• Compare this identities with given expression; so we have

• Now,

• Given that:

• We know identities that

• Compare this identities with given expression; so we have

• Now,

• Therefore

• Given that:

• We know identities that

• Compare this identities with given expression; so we have

• Now,

• Therefore

• Given that:

• We know identities that

• Compare this identities with given expression; so we have

• Now,

• Therefore

• Identity says that

• Now for (a) :
• Compare this with identities,

• Now,

• For (b) :
• Compare this with identities,

• Now,

• For (c) :
• Compare this with identities,

• Now,

• Therefore;

• Given expression:

• Compare this expression with identities

• So,

• So,

• Now using identities;

• Given expression:

• Compare this expression with identities

• So,

• So,

• Now using identities;

• Given that:

• Compare this expression with identities
• Therefore

• So,

• Now,

• Therefore;

• Given that:

• Compare this expression with identities
• Therefore

• So,

• Now,

• Therefore;

• Given that:

• Compare this expression with identities:

• Therefore,

• So,

• Now,

• Therefore;

• Given that:

• Compare this expression with identities:

• Therefore,

• So,

• Now,

• Therefore;

Developed by: