Finding Value of an Expression


Algebraic Expression II - Concepts
Class - 6th Foundation NTSE Subjects
 
 
Concept Explanation
 

Finding Value of an Expression

Value of an Algebraic Expression By assigning values to variables in an algebraic expression, we can find the value of the expression. From the following examples, we can learn How to Find The Value of an Algebraic Expression. Illustration 1:  Find the value of algebraic expression (p + q + r), if p = 1, q = 2 and r = 3 Solution:  The given algebraic expression is (p + q + r). Substitute the respective values of p,q and r in the algebraic expression, and we get                = 1 + 2 + 3               = 6 So The Value of the Given Algebraic Expression (p + q + r) is 6.

Illustration 2:  Find the value of algebraic expression (7x - 3y + 4), If x = 2 and y = 3

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Sample Questions
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Question : 1

Find the value of the expressions a - b when a =3, b = 2

Right Option : C
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Question : 2

What is the value of the expression, 2x-y+4,  if x=0 and y=3?

Right Option : B
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Question : 3

Find the value of (10a - 11b) (5a + 1) for a=-1, b=5

Right Option : C
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