Algebraic expressions/equations

Algebraic expressions/equations

by Yessenia Rivera

​Algebraic Expressions

​definition: expressions that contain numbers, variables, and algebraic operations.

​

​Parts of algebraic expressions

​variables

​Coefficients

​Constant

​Terms

​Operation

Open Ended

List each step of the order of operations (PEMDAS/GEMDAS)?

​Evaluating Algebraic Expressions

​objective: evaluate algebraic expression using substitution and the order of operations

Poll

What is the first step of evaluating an algebraic expression?

• Substitute the variables 

• Use the order of operations 

Poll

What is the second thing you do to solve an algebraic expression?

• Substitute the variables

• Use the order of operations

​examples

• ​x-5+y X=15,y=-7

• ​

Multiple Choice

Evaluate 2x+4-y , x=3, y=5

• 5

• 6

• 10

• 8

Multiple Choice

Evaluate $$-3\left(k^2+2n\right)$$  , k=-2, n=-4

• 9

• 12

• -6

• -16

Poll

How confident do you feel about evaluating algebraic expressions?

• Very confident, I could help a peer

• I need more practice.

• I don't feel confident, I need help

Algebraic Equations ​

​

Open Ended

What is the difference between an expression and an equation?

​Examples

• ​x-7=16

• ​

• ​

• ​8q-15=49

Multiple Choice

Solve for m 

m+12=-5

• -17

• 7

• 5

• 15

Multiple Choice

Solve for x

2(x-5)=14

• 10

• 8

• -14

• 12

Poll

How confident do you feel about evaluating algebraic equations?

• Very confident

• Need more practice

• I don't understand