Unit 5 Review

Like Terms

100

Combine the like terms

2x + 3 + x + 1

3x + 4

200

Combine the like terms

2a + 6 + 3a - 5

5a + 1

300

Combine the like terms

5 + 3a - 4 - 2a

a + 1

400

Combine the like terms

-5 + 3a + 7 + 2 + 6a

9a + 4

500

Combine the like terms

12a - 3a + 6 - 2a

7a + 6

Integers

100

2 + 5

7

200

-2 + -5

-7

300

-2 + 5

3

400

2 - - 5

7

500

-2 - - 5

3

Translating Word Problems

100

Write the expression

Sebastian has four times as many video games as Bob. Let x= the number of video games Bob has. 

4x

200

Write the expression

Alex has twice as many cards as Janice plus five.  Let x = the number of cards Janice has

2x + 5

300

Earnest has triple the cookies Robert has minus 2.  Let x = the number of cookies Robert has. 

3x - 2

400

Jim has twice the number of apples as Kurt. 

Fred has four time the number of apples as Kurt. 

Let the number of apples Kurt has equal x. 

How many apples to Jim and Fred have all together?

Jim: 2x     Fred : 4x

2x + 4x =

6x

500

Katrina has triple the number of sports awards as Sophie.  Kelly has twice the sports awards of Sophie plus three more.  Let x = the number of sports awards of Sophie.  Write a simplified expression that represents the sports awards of the three girls combined. 

Katrina : 3x     Sophie: x    Kelly: 2x + 3

3x + x + 2x + 3 = 

6x + 3

Expressions

100

List the terms. 

4x - 2 + 7x + 5

4x, -2, 7x, 5

200

List the variable terms

4x - 2 + 7x + 5

4x, 7x

300

List the constants. 

4x - 2 + 7x + 5

-2, 5

400

What are the coefficients? 

4x - 2 + 7x + 5

4, 7

500

Combine like terms

4x - 2 + 7x + 5

11x + 3

Surface Area

100

What polygons make up a cube?

six squares

200

What shapes make up a cylinder?

two circles and a rectangle

300

What shapes make up a pyramid?

one square and four triangles. 

400

Find the surface area of a cube with b = 4 cm and h = 4cm

96 cm²

500

Find the surface area of the cylinder on the board. 

125.6 in²