Operations with Rational numbers
Serena bought 5 shirts for $6 each and spent $7 on lunch. She paid for the shirts and lunch using her debit card. The change in the balance of Serena’s checking account can be represented by the expression shown.
5(-6) + (-7)
The integer that represents the change in her bank account balance.
What is -37
The area of the rectangle shown is 375 square centimeters.
If the base is 25cm, what is the height?
What is 15cm?
The list shows the numbers of employees in the nine departments at a company.
14, 23, 6, 54, 30, 26, 17, 3, 26
What is the range of the numbers of employees in these departments?
What is 51?
Name two ways you can pay for college.
What is scholarships, grants, loans, work-study, savings?
On Wednesday 72% of the customers who bought gas at a gas station made additional purchases.
There were 250 customers who bought gas.
How many of these 250 customers made additional purchases?
What is 180 ?
George wrote an integer. The opposite of George’s integer is -53. Which of these statements about George’s integer must be true?
I. The integer is 53.
II. The integer has an absolute value of -53.
III. The integer is -53.
IV. The integer has an absolute value of 53.
What is I and IV?
Which set of angle measures CANNOT be the angle measures of a triangle?
A) 60°, 60°, 61°
B) 1°, 1°, 178°
C) 13.9°, 16.1°, 150°
D) 59°, 60°, 61°
What is A?
The list shows the low temperature in degrees Fahrenheit for a city each day for 12 days.
Temperature (°F) 29° 30° 35° 40° 42° 59° 60° 59° 49° 43° 38° 32°
What is the range of the temperatures in the table?
What is 31?
Riley received financial assistance to pay for his college education. After he graduates, he will have to pay back the amount of money he received plus any interest that accrues after graduation.
Which kind of financial assistance did Riley receive?
F Student loan
G Scholarship
H Work-study
J Savings plan
What is F (student loan)?
A certain type of brass contains 65% copper. How many pounds of copper are contained in 120 pounds of the brass?
What is 78?
A waiter earned a 17% tip. What decimal is equivalent to 17%?
What is 0.17?
The perimeter of a triangle is 104 units. The combined length of two of the sides of the triangle is 64 units. What is the length of the third side of the triangle in units?
A 168 units
B 6,656 units
C 40 units
D 1.625 units
What is C?
The list shows the lengths of the 12 trailers sold at a store last month.
6,13, 9, 6, 9, 13, 6, 6, 17, 13, 13, 17
Which statement is true about the data?
F) The interquartile range is 7, and the range is 17.
G) The interquartile range is 7, and the range is 11.
H) The interquartile range is 2.75, and the range is 17.
J) The interquartile range is 2.75, and the range is 11.
What is G) The interquartile range is 7, and the range is 11?
A portion of Raúl’s check register is shown. His checking account had a balance of $539.50 on April 2.
(4/2) Balance: 539.50
(4/2) Withdraw: 35.50
(4/6) Withdraw: 23.75
(4/13) Deposit: 55.00
Based on the information in the check register, what was the balance of Raúl’s checking account after the transaction on April 13 in dollars and cents?
What is $535.25 ?
A baseball traveled 330 feet in 5 seconds. Which rate is equivalent to the rate at which the baseball traveled?
A 55 feet per second
B 66 feet per second
C 55 seconds per foot
D 66 seconds per foot
What is B (66 seconds per second)?
Which list shows the numbers in order from least value to greatest value?
F -2/5 , -2.47 , -2 1/2 , 5 , 21/4
G -2/5 , -2.47 , -2 1/2 , 21/4 , 5
H -2 1/2 , -2.47 , -2/5 , 5 , 21/4
J -2 1/2 , -2.47 , -2/5 , 21/4 , 5
What is H?
Which list of angle measures could be the angle measures of a triangle?
A 20°, 45°, 120°
B 100°, 130°, 130°
C 35°, 60°, 85°
D 25°, 55°, 110°
What is C?
Explain (write it first) the steps for finding the IQR. Must include vocabulary.
1. Order the data from least to greatest.
2. Find the Median
3. split the data into Q1 and Q3
4. find the middle of both and subtract to find the IQR
Ms. Versini applied for a car loan from a bank. Which statement best describes the importance of Ms. Versini’s credit report to the bank?
F The report shows the likelihood that Ms. Versini will pay back the entire loan on time.
G The report shows the highest level of education that Ms. Versini has reached.
H The bank gives higher interest rates to people with higher credit scores.
J The bank gives partial loans to people with strong credit.
What is F?
A grocery store orders 4 large containers of milk for every 7 small containers of milk. Which ratio could represent the number of large containers of milk to small containers of milk in an order from the grocery store?
F 18:21
G 14:8
H 16:49
J None of these
What is J (none of these?)
LuAnn is playing a math game. She chooses three cards. The value of each of her cards is shown.
• First card: -12
• Second card: 3
• Third card: -5
What is the sum of the values of LuAnn’s three cards?
What is -14?
The dimensions of the rectangular prism are given in centimeters.
4 cm 3 cm 1.4 cm
What is the volume of the rectangular prism in cubic centimeters?
What is 16.8 cm cubed?
Draw a box plot and show your teacher the parts of a box plot using these numbers:
12, 4, 3, 5, 7, 8, 11
Must include:
Smallest number: 3
Q1: 4
median: 7
Q3: 11
Largest number: 12
BONUS: IQR = 7
Consumers sometimes make choices that cause negative information to be put on their credit reports. Which of these is the most likely number of years that this negative information will remain on their credit reports?
A 3 to 6 years
B 7 to 10 years
C 11 to 14 years
D 15 to 18 years
What is B (7-10 years)?
In Austin, Texas, 8 bats ate 40 grams of insects in one night. At this rate, how many grams of insects could 64 bats eat in one night?
What is 320?