Percent of Change
Discounts, Tax, Tip, Markup & Markdown
Percent Proportion & Expression
Simple Interest (formula will be given) & Commission
Sampling
Comparing Measures of Center and Variation
100
The old price of a shirt is $20. The new price is $30. What is the percent increase?
50%
100
Will spends $20 at a restaurant and wants to leave a 15% tip. How much tip will he leave?
$3
100
What is 60% of 80?
48
100
Chase sells a $60,000 car and makes a 3% commission. How much money does he get from selling the car?
$1,800
100
Kervens surveys the first 50 people he sees. What type of sampling method is he using?
Convenience
100
Test Scores
Student A: 50, 80, 70, 60
Student B: 45, 83, 58, 62Who has the higher mean?
STUDENT A HAS THE HIGHER MEAN
Student A: 65
Student B: 62
200
Ellie weighed 21 pounds in December and now weighs 28 pounds. What is the percent increase of her weight?
33%
200
Joseph is always asking his mom to buy Lucky Charms. Right now, all cereal is 35% off. How much is a discounted box of Lucky Charms if the original price is $3.75
$2.44
200
50 is 20% of what number?
250
200
Erick deposits $50,000 into the bank which earns a simple interest rate of 4%. How much interest will he earn in 2 years?
$4,000
200
Which two sampling methods will never be truly representative of the population?
Convenience & Voluntary
200
Which has the largest measure of center?
Video Games
300
A $50 item is on sale this week for $40. What is the percent decrease?
20%
300
On Monday, the cost of a ticket to a Cardi C concert is $65. On Friday, the cost of the tickets went down to only $45. What is the percent markdown of the tickets? Round to the nearest percentage.
31%
300
A $25 shirt is 30% off. Which expression shows how to calculate the discounted price?
A) 25(0.3)
B) 25(1.3)
C) 25(0.7)
D) 25(1.07)
C
300
Celinna takes out a loan for $40,000 with a simple interest rate of 5%. How much will she owe in total after 4 years?
$48,000
300
Torey wants to know how often Five Forks students do homework. Which is the best way to collect his data?
A) Survey everyone on his bus
B) Survey his friends
C) Survey the peer leaders
D) Send flyers home to all FFMS students with a link to a survey they can complete
A
300
Which brand has a longer battery life?
A) x, it has the largest range
B) y, it has the largest range
C) x, it has the largest median
D) y, it has the largest median
D) y, it has the largest median
400
Movie prices increased from $8.75 to $9.50. What is the percent increase? Round to the nearest tenth.
8.6%
400
An $80 jacket is on sale for 25% off. A 6% tax is added onto the discount. What is the total price of the jacket after the discount and tax?
$63.60
400
25 is what percent of 80? Round your answer to the nearest percent.
31%
400
Amir is a salesperson who earns 2% commission on everything he sells in addition to a monthly salary of $1,500. This month, he sells a total of $12,000 of merchandise. How much will he have made at the end of the month?
$1,740 ($1,500 + $240)
400
Adriana does a survey and determines 5 out of every 12 people have a pet. Based off these results, about how many people would you expect to have a pet out of a group of 40?
About 17 (16.666...)
400
Which bookstore is more consistent and why?
A) B, it has a smaller median
B) A, it has a larger median
C) B, is has a smaller IQR
D) A, it has a larger IQR
C) B, is has a smaller IQR
500
A truck weighed 80,000 pounds last week. This week, it only weighs 65,000 pounds. What is the percent decrease? Round to the nearest tenth.
18.8%
500
Byron is buying furniture. The furniture costs $120 but Byron has a coupon for 15% off all furniture. He checks out at the register and a 6.5% tax is added onto the discounted price. Byron hands the cashier $110. How much change will he receive?
$1.37
500
Soliyana spends $25 on an entree and wants to leave a 20% tip. Which expression can Soliyana use to determine the total price of her meal after tip?
A) 25(0.2)
B) 25(1.2)
C) 25(0.8)
D) 25(1.8)
B
500
Who makes more?
Danna earns 5% commission and a monthly salary of $1,200. Esmerelda earns a 7% commission and a monthly salary of $1,000.
Both Danna and Esmerelda sell $50,000 worth of jewelry. Who will make more in total at the end of the month?
Esmerelda makes more
Danna: $2,500 + $1,200 = $3,700
Esmerelda: $3,500 + $1,000 = $4,500
500
About how many people out of a group of 120 would you expect to favor the Pandas exhibit?
About 43
500
Calculate the interquartile range
8