Unit 2 8th grade Math

Simplify Expressions

100

-3p + 6p 

3p

200

10x + 36 - 38x - 47

-28x - 11

300

-7(k - 8) + 2k

-5k + 56

400

-8(-5b + 7) + 5b

45b - 56

500

3(x + y) - 4x - 3(8 + y) 

-x - 24

Evaluate Expressions

100

x - 12 

When x = 2

-10

200

x + 7 +3x

When x = 2

15

300

6x - 2x 

When x = -3

-12

400

5x + 2y 

When x = 2 and y = -2

6

500

8x - 3y + (-2x) + 9y

When x = 4 and y = 5

54

Solve for a variable

100

−3(4r − 8) = −36

r = 5

200

6(6v + 6) − 5 = 1 + 6v

v = -1

300

4(k - 8) = -32 + 4k

Infinite solutions

400

36 - 7 p = -7( p - 5)

No solution

500

−11 + 10( p + 10) = 4 − 5(2p + 11)

p = -7

Unit Rates

100

Victor made 182 in 8 hours. What is his hourly wage? 

$22.75/hour

200

Mrs Wallace-Lopez drove 912 miles in 12 hours. What is her speed in miles per hour? 

76mph

300

Huckleberry ate a 50lb bag of food in 20 days. How many lbs of food per day does he eat? 

2.5lbs/day

400

3 cups of coffee cost $17.94. How much would 7 cups of coffee cost? 

$41.86 for 7 cups of coffee

500

4 large popcorns cost a total of $47.92. 3 fountain drinks cost $19.50. 

How much would 6 large popcorns and 7 fountain drinks cost? 

$117.38

Random

100

Name on of Mr. Lopez's dogs. 

Davy Jones or Huckleberry

200

How many keys are on a standard keyboard? (Musical keyboard)

88

300

What's the dogs name in The Wizard of Oz? 

Toto

400

What is the powerhouse of the cell? 

Mitochondria 

500

How many named islands are in the San Juan Islands? 

172