Fractions
Greta had 1/2 of a pizza left. On Saturday, she ate 1/2 of what was left. How much of the total pizza did Greta eat on Saturday?
1/4
At William's Italian Restaurant, 2 tables are full and 32 tables are empty. What is the ratio of empty tables to full tables?
32:2
A grocery store sells a bag of 6 bananas for $1.50. At a different stand, you can buy 5 oranges for $3.00. How much would it cost to buy exactly 2 bananas and 2 oranges?
Two bananas cost $0.50 and two oranges cost $1.20, for a total of $1.70.
Which of the following numbers is an integer but NOT a whole number?
B (-5). While 12 and 0 are whole numbers, negative numbers like -5 are integers but not part of the "whole number" set (0, 1, 2...).
Which of the following is a statistical question?
statistical question is one that anticipates variability in the data (different answers from different people). Question A has only one specific
2. Problem: A baker has 15 cups of sugar. Each batch of cookies requires 3/4 cup of sugar. How many batches can she make?
20 Batches
A farm has 8 pigs and 5 sheep. What is the ratio of pigs to sheep?
8:5
Christina is hosting a party and bought 5 pints of ice cream. If she serves each guest 1/4of a pint, how many people can she serve?
5 Divided by 1/4
A submarine is at an elevation of -60 feet relative to sea level. What does an elevation of 0 feet represent in this situation
In rational number problems, 0 often represents a baseline like sea level, a bank balance of $0, or a temperature of 0 degrees
Sally bowled 5 games with scores of 149, 183, 149, 193, and 147. What is the median score of her games?
The median (middle number) is 149. (The mean is approximately 164).
A wooden board is 10 meters long. If a carpenter cuts off 3 1/2 meters, how much wire remains?
6 1/2
Jenny has 3 guitars and Steve has 4 guitars. If the ratio of guitars is described as 4:3, whose name must come first in the description?
Steve
Sam bought 8 ball caps for her friends at $8.95 each. The cashier charged an additional $12.07 in sales tax. If Sam left the store with $6.28 in change, how much money did she start with?
She started with $89.95.
Two hikers are at different elevations: Hiker A is at -15 meters and Hiker B is at 10 meters. Which hiker is farther from sea level (0 meters)
Hiker A. Even though -15 is a "smaller" number than 10, its absolute value (distance from zero) is greater
In a data set, the First Quartile (Q1) is 15 and the Third Quartile (Q3) is 23. What is the Interquartile Range (IQR), and what does it tell you?
The IQR is 8. It represents the spread of the middle 50% of the data.
A water jug contains 2 1/4 liters. If 1 1/2 liters are poured out, how much is left?
3/4
A bag of marbles contains 11 blue marbles and 38 green marbles. What is the ratio of blue marbles to the total number of marbles?
11:49
A laptop originally costs $1,050 but is on sale for 20% off. If you have a coupon for an additional 10% off the sale price, what is the final price of the laptop?
The final price is $756.
Place the following rational numbers in order from least to greatest:
-2.5, 1/2, -3, 0.75, 0
3, -2.5, 0, 0.5, 0.75.
A dot plot shows the number of books students read over the summer. There is a large cluster of dots between 2 and 4 books, and one single dot at 20 books. What is the term for the value "20"?
An outlier is a data point that is significantly different from the rest of the distribution
"At Jayce's Arcade, 3/5 of the games are racing games. Among the racing games, 2/3 are motorcycle-racing games. What fraction of the total games at the arcade are motorcycle-racing games?".
6/15 or 2/5
Which of the following is a real-life example of a ratio?
Answer: B
A rectangular garden measures 9.45 feet long and 12.15 feet wide. What is the area of the garden? (Round your answer to the nearest hundredth)
The area is 114.82 square feet.
Point A is located at (4, -3) on a coordinate plane. If Point A is reflected across the x-axis, what are the coordinates of the new point
(4, 3)
To create a box plot for a data set, what five values do you need to identify?