Topic 4 Review

Simplify Expressions

100

Simplify the expression below.

5x - 3x

2x

200

Simplify the expression below.

-6 + (-2d) + (-4d) + 3d

-3d - 6

300

Simplify the expression below.

 5/8m+9-3/8m-15 

1/4m-6

400

Simplify the expression below.

-8w + (-4z) + 2 + 6w + 9z - 7

-2w + 5z - 5

500

Simplify the expression below.

5b + 3c - 20 + 3b - 15c + 4

8b + 12c - 16

Expand Expressions

100

Expand the expression below.

3(t - 2)

3t - 6

200

Expand the expression below.

-1/2(y-x)

-1/2y+1/2x

300

Expand the expression below.

 3.5(-3n + 4)

-10.5n + 14

400

Expand the expression below.

1/5(15+10x-5)

3 + 2x - 1

500

Expand the expression.

2(x - 6) + 2(8)

2x + 4

Factor Expressions

100

What is the GCF of 21 and 9?

3

200

What is the GCF of -18 and -27?

-9 or 9.

300

Factor the expression below.

30b - 6c

6(5b - c)

400

Factor the expression below.

81y + 54

27(3y + 2) 

500

Factor the expression below.

12x - 9y + 15

3(4x - 3y + 5)

Add Expressions

100

Add the expressions below.

(3z + 1) + (5 + 7z)

10z + 6

200

Add the expressions below.

(10x - 4) + (-7 + x)

11x - 11

300

Add the expressions below.

(3.2 + 4x) + (18.25 + 6x)

10x + 21.45

400

Add the expressions below.

(8b + 12) + (3n + 6) + (9b - 4)

17b + 3n + 14

500

There are 10x - 8 customers in a store on Monday and 6x + 16 customers on Tuesday. What is the total number of customers for the two days?

16x + 8

Subtract Expressions

100

Subtract the expressions below.

10x - (-7 + 6x)

4x + 7

200

Subtract the expressions below.

12y - (-4 - 8y)

20y + 4

300

Subtract the expressions below.

14z - 3 - (6 - 5z)

19z - 9

400

Subtract the expressions below.

(-9p + 7) - (-9p + 3)

4

500

During a walkathon, Team A walks a total of 6x + 12 miles and Team B walks a total of 4x - 7 miles. What is the difference in miles walked between the two teams?

2x + 19