Download Evaluating Algebraic Expressions Study Guide

Name: _____________________________________ Date: ____________________
Evaluating Algebraic Expressions Study Guide
Algebraic Expressions
contain a combination of variables, numbers,
and at least one operation.
(Variable = a, x, y; number = 1, 2, 56, 24;
operation = +, -, ×, ÷)
To Evaluate an Expression follow these steps:
1. Write the algebraic expression
2. Substitute the values given for the variables
3. Simplify the expressions (Remember to use PEMDAS)
Follow the examples:
Evaluate each expression, if:
a=3
b=5
c=8
x = 10
Step 1
a+b-y
5 + 3x
Step 2
3+5-2
5 + 3(10)
Step 3
8
-2
y=2
2b – a + c
2(5) – 3 + 8
5 + 30
6
z=1
10 – 3 + 8
35
7
+8
15
Your turn: Complete the next step:
Step 1
3y + 4
Step 2
3___ + 4
(__)(__)(__)
Step 3
___ + 4
(___)(__)
____ + ____ + ____
____
____
____
xyz
2x
+ 3y
+ 4z
2 ____+3____+4 ____
Now, complete all the steps:
Step 1
4z + 3
x+y+z
4a - y
Step 2
Step 3
AO 1007
1
Name: _____________________________________ Date: ____________________
Step 1
3b + z
(x + y)
3y + 4c + 1
4a + xy
2y + 4abc
8ab - c
Step 1
6b + 3y + 1
3
4ab + c
2
2x + 3y - 2
c
Step 2
__________
Step 2
Step 3
Step 1
Step 2
Step 3
____________
___________
Step 3
AO 1007
2