Statistics & Probability
Expressions/Equations
Proportional Relationships
Percents
Wild Card
100
In a bag there are 5 red marbles, 8 blue marbles, and 11 green marbles. If you randomly take one marble out of the bag what is the probability it will be blue?
What is...
8/24 = 1/3
100
Simplify the expression:
4 + 2x -(52 * 3)
What is...
2x - 71
100
The graph displays a proportional relationship between square feet of carpet and the total cost in dollars. What is the constant of proportionality?
What is....
k = y/x = 15/10 = 30/20 = 1.5
100
What is 37.5% of of 24?
What is....
9
3/8 (24) or .375 (24)
100
Solve:
-5 + 4 - 9 + 2
What is...
-8
200
A gumball machine has yellow, pink, and blue gumballs. There is an equal chance that you will pick either color. At the same time that you take a gumball you also flip a coin. What is the probability of a pink gumball and flipping heads on the coin?
What is...
P (pink and heads) = P (pink) * P (heads)
1/3 * 1/2 = 1/6
200
Solve the equation:
4(6x + 8) - 2x = 10
What is...
x = -1
200
A factory has 6 cutting machines.
Each cutting machine cuts 105 parts every 3 minutes.
How many parts can all 6 cutting machines cut in 1 minute?
What is...
210 parts
105/ 3 = 35/1 minute for one machine
35/1 * 6 = 210 / 1 for all 6 machines.
200
Ms. Serrao used "girl math" to measure the area of a rug at the store. According to her calculations the area was approximately 53 in2. When she got home, Ms. Serrao measured the rug and the area was actually 58 in2. What was the percent error, rounded to the nearest whole percent?
What is...
9% error
(58-53) / 58 * 100 = 8.62
200
Where did Ms. Serrao go to college?
The College of New Jersey
300
Using the following box and whisker plot, which method lead to the largest spread of scores?
What is....
Method 3
This has the largest range (or spread) 38 - 10 = 28
300
Solve the equation:
-3(x-2) + 4 = 16
what is...
x = -2
300
The manager of a movie theater wants to collect data about the ages pf people seeing a new movie:
Age | Number of People
20 & under | 45
20 + | 30
Based on these results how many of the full 335 people who saw the movie would you expect to be under 20?
Set up a proportion!
What is....
about 201 people
45/75 = x/335
300
Daily Double!!!!
You take out a loan with a simple interest rate of 3.5%. You have the loan for 4 years before paying it off. Your total interest is $770 , how much did you borrow?
What is...
p=$5,500
I = Prt
770 = p(0.035)(4)
300
Name three places Ms. Serrao has traveled to...
What is...
400
A deck of cards has 52 cards.
What is the probability of picking a red card and a club without replacement!
What is...
338 / 2652 = 169/1326
(26/52) * (13/51)
400
Simplify the expression:
22 [2+(3−4)] + [5(2+1−7)]
What is....
-16
400
The following chart is proportional between number of trees and number of apples.
How many trees are needed to make 195 apples?
How many apples are on 2.5 trees? Round to tenths 
What is...
15 trees make 195 apples
2.5 trees about 32.5 apples
400
A trumpet is on sale for 30% off the original price of $150. You also have a 15% of coupon you apply at checkout. What is the final price of the trumpet?
What is....
$89.25
400
Leo signs up to coach hockey. He
wants to make at least $775 during the
season. He gets $200 at the start of the
season and $50 for each practice session
he has. How many practice sessions
does Leo need to have this season to meet his goal?
What is...
x = 11.5
Leo needs to coach at least 12 whole sessions.
500
A donut shop sells create your own donuts! You may choose from the following:
cake donut or fried donut
strawberry, vanilla, chocolate, no icing
rainbow, chocolate, no sprinkles
chocolate drizzle or no drizzle
How many combinations of donuts can you make?
What is ....
48 combinations of donuts
2 * 4 * 3 * 2 = 48
500
Setup and solve the following word problem:
Brian is twice as old as Charlie. In three years, the sum of their ages will be 33. How old are both Brian and Charlie now?
Key:
B = 2C C = C
In three years...
B= 2C+3 C= C+3
2C + 3 + C + 3 = 33
3C + 6 = 33
3C = 27
C = 9 B = 2(9) = 18
500
A painter plans to paint a room with an area of 515 square feet. He mixes paint to create a specific shade of green. The ratio of each color in his mixture is shown.
- 1 part blue paint
- 3 parts yellow paint
- 2 parts white paint
Part A
The painter estimates that he will need 1 gallon of green paint for every 175 square feet of the room. He estimates the smallest number of whole gallons of green paint needed to paint the room. How much blue paint will the painter need to make this batch of green paint?
What is...
1/2 gallon blue
1 gallon / 175 feet = x gallons / 515 feet
x = 2.9 = 3 (estimate) gallons green
3 * (1/6) = 1/2 gallon blue
500
A couch is on sale for 35% off. Your purchased the couch for $255. How much was the original price of the couch?
What is...
$392.31
65/100 = 255/x
500
Solve and Graph the inequality:
(x+4) / -5 > 4/15
**rewrite as fraction**
What is...
x < -5 1/3