Chapter 3 Review

Writing expressions

100

the sum of 8 and x

8 + x

200

the difference of 11 and y

11-y

300

the product of w and 4

4w

400

the quotient of 18 and a number n

18/n

500

The product of 5 and a number x

5x

Identify the Property

100

Tell which property the statement illustrates:

4 * x = x * 4

Commutative Property of Multiplication

200

Tell which property the statement illustrates:

4 + (x + 9) = (4 + x) + 9

Associative Property of Addition

300

Tell which property the statement illustrates:

(4*5)*3 = 4 *(5*3)

Associative Property of Multiplication

400

Tell which property the statement illustrates:

5(x + 9)=5x + 45

Distributive Property

500

Tell which property the statement illustrates:

x + 0 = x

Identity

Distribute

100

2(f+3)

2f+6

200

8(u-2)

8u-16

300

4(b-1)

4b-4

400

4(r+9)

4r+36

500

12g(1+12)

12g + 144g or 156g

Simplify the Expression

100

2(v+5)+7v-4

9v+6

200

5(r+9)-5

5r+40

300

1+4(u+1)

4u+5

400

2+7(y+2)

7y+16

500

7(w+4)+3w-27

10w+1

Word Problems

100

Evaluate the expression when x = 8

2x + 2

20

200

The running time in minutes of a TV episode is 50 - 0.25x, where x is the number of commercials aired during the episode. What is the running time of an episode with 24 commercials?

44 minutes

300

To find the percentage of an item you divide the price by 25. Write an algebraic expression to find the percentage of a number d

d/25

400

The cost for a meal can be found by doing 20-x where x is the discount amount. Use the distributive property to write and simplify an expression to find the total cost of buying 5 meals. 

100 - 5x

500

The sides of a square have a length of 8x inches. Write an expression for the perimeter of the square (in inches).

32x