Proportions
A car travels 180 miles using 6 gallons of gas. What is the unit rate in miles per gallon?
30
What is 30% of 60
18
Which inequality shows 'at least 15'?
A. x < 15
B. x ≤ 15
C. x ≥ 15
D. x > 15
D. x > 15
Which situation is most likely to produce a representative sample?
A. Surveying volunteers online
B. Randomly selecting students from the entire school
C. Surveying one class
D. Asking only athletes
B. Randomly selecting students from the entire school
A bag has 3 red, 5 blue, and 2 green marbles. What is the probability of drawing a blue marble?
5/10 = 1/2
A store sells 5 notebooks for $12.50. What is the price per notebook?
$2.50
A school has 500 students. 60% participate in sports. How many students participate in sports?
300
-6.8 + 6.4 + ________ = 0
Which expression, when placed in the blank, makes this equation true?
A. -4.3 + 4.7
B. -6.5 + 6.7
C. -4.3 + (-4.7)
D. -6.5 + (-6.7)
A. -4.3 + 4.7
Abby wants to find out what the most popular food is in her grade. She surveys all of the students in her science class. What is the population and sample? Is this a representative sample?
Population: everyone in her grade
Sample: all the students in her science class
No, it is not a representative sample because it is not random
A die is rolled. What is the probability of rolling a number greater than 4?
2/6 = 1/3
What is the k value in the equation y=5x
k=5
A game costs $50 and is on sale for $40. What is the percent decrease?
20%
You have at most $50 to spend at the carnival, admission is $10 and each ride ticket is $3. How many rides can you go on?
13
According to the dot plot, how many students were surveyed?
10
Micah has to roll a 6-sided cube, spin a wheel with 4 equal sections, and flip a coin. To win he has to roll a 3, spin a 2, and flip heads. How many possible outcomes will there be?
48
A school fundraiser sold 120 tickets and raised $900. At this rate, how much money would be raised from 200 tickets?
$1500
Joesph's lunch at a restaurant costs $13.00, without tax. He leaves the waiter a tip of 17%. What is the total cost of the lunch, including the tip, without tax?
$15.21
What is the value of the expression below?
-3/2 + (-7/8)(-3/4)
-27/32
Find the mean, median, mode, and range of the following set:
6, 2, 8, 1, 6, 10, 4, 6, 2, 2
mean: 4.7
median: 5
mode: 2 and 6
range: 9
Darius will spin the arrows on two spinners. Spinner A is divided into three equal sections and Spinner B is divided into four equal sections. Darius will spin each arrow one time. What is the probability that both numbers Darius’s spins will be even numbers?
2/12 = 1/6
A map has a scale factor of 1 centimeter = 50 miles. The actual distance between New York City and Washington DC is 225 miles. What is the distance, in centimeters, between the two cities on the map?
4.5 centimeters
Kenneth bought a shirt that was originally priced at $55.00. After a discount, he paid $38.50. What was the percent discount of the original price of the shirt?
30%
Kasey and Andrew each went for a walk, once a day, for 4 days. Kasey walked 3/4 miles each day and Andrew walked 3/5 miles each day. At the end of 4 days how much farther did Kasey walk than Andrew?
3/5 or 0.6 miles
What is the difference between the interquartile range of box plot 1 and box plot 2?
15
For breakfast, Arman has a choice of pancakes, french toast, and waffles and a choice of milk, hot chocolate, or juice. Draw a tree diagram to depict this situation.
P F W
| | | | | | | | |
M H J M H J M H J