Topic 4

4-1: Write and Evaluate Algebraic Expressions

100

What is the value of 2/12x when x = 4.5?

- 1.25

200

What is the value of -4/18 +5 when x = 2.6

The value is 4.42

300

Simply

7.7x + 3.6f when

x = 12.2

f = 5.9

115.18

400

Simplify

3.25f - 5.32g + 7a     Round to the nearest hundredth.

f = 8

g = 6.8

a = 3.2

12.26

500

The depth of a submarine is 56. It ascends at the rate of 2ft per minute. What is the depth after 8 minutes?

-40

4-2: Genrate Equivalent Expressions

100

What is the Commutative Property?

To switch the order of the numbers.

200

What expression is equivalent to 5f - 6?

A. 11f

B. 5f + (-6)

C. f

B.

300

Use the associative Property to write an equivalent expression of (19 + x) + 8.

x +  (19 + 8)

400

Use the Commutative Property to rewrite 12 + x + 15 + f 

A. 15x + 12f

B. 15 + 12 + x + f

C. 12x + 15f

B.

500

Select all the equivalent to 1/4x + 2. 

A. 2 + 1/4x 

B. 2/8x + 1 + 1

C. 3/8x + 2 - 1

D. 25/100x + 2

A, B and D

4-3: Simplify Expressions

100

Simplify

3a (7 + 7b)

21a + 21ab

200

Simplify

58.5m + 7.86m - 38.2

66.36m - 38.2

300

Simplify

8.2n + 3.4s - 2.8 + 7.9n - 3.3s

0.1s + 16.1n - 28

400

Simplify

6.8z (3.2n + 3z - 2)

42.16z - 13.6

500

Select all equivalent expressions to 

8.9x + 5y + 2.5x

A. ll.4z +5y

B. 2.5x + 5y + 8.9x

C. 5y + 8.9y + 2.5x

A and B

4-4: Expand Expressions

100

An area model can be used to represent _____

Distributive property

200

Simplify

2.6 (y + 3. )

2.6y + 9.1

300

Patric wants to add a box with a width of 3 inches and a length of x. He already has a rectangle with a width of 3 inches and a length of 9.2 inches. What is the combined area?

3x + 27.6

400

1/3 (6 + 8m + 3.5m)

2 + 3.8m

500

Sally wants to add onto her garden. Her original garden was 7.4 feet wide and a length of x. She plans to add 6 feet to the length. She says the problem is 22 + 3. Is she right or wrong. If she is wrong what is the correct answer?

She is wrong, 

the correct answer is 7.4x + 44.4

4-6: Add Expressions

100

Simplify

(1/2 +  ) + (9y + 2)

5.5 + 9y

200

Simplify

(8.8 + 2y) +  (8x +  )

13.8 + 8x + 2y

300

Mark was planting x sunflower seeds in one garden and 32x + 50 sunflower seeds in another garden. How many seeds is Mark planting in all?

33x + 50

400

Simplify

3.5 (21f + 6.8) + (13y + 1.22)

73.5f + 36.8y + 1.22

500

Simplify 

16a (9.9c + 7) + 18.1a (5a + 8.3y)

202.5a + 158.4ac + 150.23ay