Lesson 5-1: Algebraic Expressions

Lesson 5-1: Algebraic Expressions

Multiple Choice

A variable is . . .

• an awesome number

• a number represented by a letter

• an infinite number

• a number multiplied by another number

Multiple Choice

Which of the following answer choices is NOT an example of a variable?

• 8
• x
• u
• n

Multiple Choice

Which number is the coefficient?

$$3x-1$$  

• 3

• 3x

• x

• 1

Multiple Choice

Which number is the variable?

$$3x-1$$  

• 3

• 3x

• x

• 1

Draw

Circle all coefficients.

Underline the variables.

Evaluating Expressions

1. ​Substitute

2. ​Simplify using Order of Operations

Multiple Choice

Evaluate the expression if $$c=8\ \&\ d=-5$$  :

$$c-3$$  

• -8

• 5

• 3

• 13

Multiple Choice

Evaluate the expression if $$c=8\ \&\ d=-5$$  :

$$3\left(c+d\right)$$  

• -9

• -33

• 33

• 9

Multiple Choice

Evaluate the expression if $$c=8\ \&\ d=-5$$  :

$$2c-4d$$  

• 36

• -4

• -22

• -42

Multiple Choice

Evaluate the expression if $$c=8\ \&\ d=-5$$  :

$$2d^2+5d$$  

• -75

• -25

• 25

• 75

​Writing Expressions

Multiple Choice

Nate has 6 fewer CDs than Emily.  If c represents the number of CDs Emily has, which expression tells how many CDs Nate has?

• 6-c
• 6+c
• c-6
• c+6

Multiple Choice

Jamal helped his grandmother plant her vegetable garden. He planted 3 rows of zucchini seeds and 4 rows of yellow squash seeds. Each row had s seeds. Which expression represents how many seeds Jamal planted in all?

• 3s + 4s

• 3s + 4

• 4s + 3

• 34s

Multiple Choice

If p represents the points Kia scored in a game, which expression shows how she tripled her point total?

• $$3p$$

• $$3\ -\ p$$

• $$3\ +\ p$$

• $$\frac{p}{3}$$