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5 Introduction to Algebra

Learning Objectives

After studying this chapter, students will be able to... Scan to learn
 explore more about the patterns and frame the generalize rule using variables to
describes their formation
 explain and recognize the variables
 use variables in common rules from geometry and arithmetic
 form algebraic expressions in mathematical statements and formulae.
 identify the variables, constants, coefficients, powers and terms in an algebraic expression
 identify like and unlike terms
 identify different types of algebraic expressions
 find the value of an algebraic expression by substituting the values of the variables
 add and subtract two or more algebraic expression

GET READY!

Sneha and her family are sitting in a living room spending quality time.

Papa! I want to distribute
some stationery items to an That's great!
orphanage on my birthday.

What is this, and
why are we using
‘x’ in math?

You should buy some notebooks and 8 more
pencils than the double of notebooks. Suppose, if
you buy ‘x’ notebooks, then you should buy
(2x + 8) pencils to distribute.

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