8th grade review (sem 1)

Probability

100

5!

120

200

₆P₂

30

300

If there are 2 blue, 3 green, and 7 red marbles in a bag, what is the probability of drawing a green marble?

25%

400

How many ways can six committee members be chosen from 12 candidates?

924

500

If there are 2 blue, 3 green, and 7 red marbles in a bag, what is the probability of drawing a green marble and then a blue marble without replacement?

4.5%

Expressions and Integers

100

Translate into an expression:

4 less than the product of 5 and a number.

5n - 4

200

Evaluate:

12 - (2 + 10/5)

8

300

Evaluate:

-17 + (-5)

-22

400

4² * 3 + 6

42

500

Evaluate for y = -3:

7 - /3y/

-2

Equations

100

4 + x = -13

x = -17

200

-4(x - 2) = -8

x = 4

300

8 - 2x = 3x -7

x = 3

400

-20 = 5 - (3 + x)

x = 22

500

Write an equation but do NOT solve:

Suzi has four dollars less than twice the amount Bobby has. Suzi has $24.

24 = 2b - 4

Inequalities and Proportions

100

Solve:

10 + x < 1

x < -9

200

Write an inequality for...

Suzi has at most 12 pets.

s < or = 12

300

-21 > -2x - 5

x > 8

400

Solve the proportion.

x/-3 = (3x - 1)/4

x = 3/13

500

A map is drawn to scale with 1 inch being 50 miles. How far is it from Timbuktu to Tallahassee if it is 30 inches on the map.

1500 miles