Evaluating Algebraic Expressions

Simplify:
17m - 4 - 15m + 8

• 2m + 4

• 2m + (-12)

• 2m + 12

• 2m + (-4)

Translate the phrase into an algebraic expression: Three times the difference of a number and 1

What is an algebraic expression?

• a letter or a symbol used to represent an unknown value

• an expression that contains numbers, operations, and one or more variables

• a specific number whose values does not change

2x + 5(y - 1) when x=8 and y=5

• 20

• 31

• 36

• -4

Write an algebraic expression for:
the product of 5 and a number

• 5 + n

• n + 5

• 5n

• 5/n

Write an algebraic expression for:
8 more than a number

• 8 + n

• 8n

• 8 -n

• n-8

Evaluate expression: -5a -b for a= -6 and b= 3

• 33

• 30

• 27

• 24

(y + z)² when y=5 and z=2

• 7

• 49

• 29

• 14

Evaluate the expression for n = 2 and p = 7.
np =

• 9

• 5

• 15

• 14

Evaluate n + 5² for n=3

• 13

• 8

• 25

• 28