Algebraic Expressions Class 7 PPT

 Page 2


O b j e c t i v e s :
? To understand the formation of Algebraic Expressions
?To add & subtract Algebraic Expressions
?Simplify Algebraic Expressions
?To find value of Algebraic Expressions
Page 3


O b j e c t i v e s :
? To understand the formation of Algebraic Expressions
?To add & subtract Algebraic Expressions
?Simplify Algebraic Expressions
?To find value of Algebraic Expressions
?Algebraic expressions are formed from variables and
constants. We use the operations of addition, subtraction,
multiplication and division on the variables and constants to
form expressions. For example, the expression 2xy + 5 is
formed from the variables x and y and constants 2 and 5.
The constants 2 and 5 and the variables x and y are
multiplied to give the product 2xy and the constant 5is
added to this product to give the expression.
Page 4


O b j e c t i v e s :
? To understand the formation of Algebraic Expressions
?To add & subtract Algebraic Expressions
?Simplify Algebraic Expressions
?To find value of Algebraic Expressions
?Algebraic expressions are formed from variables and
constants. We use the operations of addition, subtraction,
multiplication and division on the variables and constants to
form expressions. For example, the expression 2xy + 5 is
formed from the variables x and y and constants 2 and 5.
The constants 2 and 5 and the variables x and y are
multiplied to give the product 2xy and the constant 5is
added to this product to give the expression.
? Expressions are made up of t e r m s. Terms are a d d e d to make
an expression. For example, the addition of the terms 4 x y
and 7 gives the expression 4 x y + 7 .
? A term is a p r o d u c t o f f a c t o r s. The term 4 x y in the
expression 2 x y + 5 is a product of factors x, y and 2 Factors
containing variables are said to be a l g e b r a i c f a c t o r s.
? The c o e f f i c i e n t is the numerical factor in the term.
Sometimes anyone factor in a term is called the coefficient
of the remaining part of the term.
Page 5


O b j e c t i v e s :
? To understand the formation of Algebraic Expressions
?To add & subtract Algebraic Expressions
?Simplify Algebraic Expressions
?To find value of Algebraic Expressions
?Algebraic expressions are formed from variables and
constants. We use the operations of addition, subtraction,
multiplication and division on the variables and constants to
form expressions. For example, the expression 2xy + 5 is
formed from the variables x and y and constants 2 and 5.
The constants 2 and 5 and the variables x and y are
multiplied to give the product 2xy and the constant 5is
added to this product to give the expression.
? Expressions are made up of t e r m s. Terms are a d d e d to make
an expression. For example, the addition of the terms 4 x y
and 7 gives the expression 4 x y + 7 .
? A term is a p r o d u c t o f f a c t o r s. The term 4 x y in the
expression 2 x y + 5 is a product of factors x, y and 2 Factors
containing variables are said to be a l g e b r a i c f a c t o r s.
? The c o e f f i c i e n t is the numerical factor in the term.
Sometimes anyone factor in a term is called the coefficient
of the remaining part of the term.