Proportions & Percents
A map scale is 1 inch = 50 miles. If two cities are 4 inches apart on the map, what is the actual distance?
200 miles
Solve for x: 3x + 5 = 20
5
What is the formula for the area of a circle?
A=Pir2
If you flip a coin, what is the theoretical probability of landing on "Tails"?
1/2 or 50%
Solve:
-15 + (-10)
-25
A $60 jacket is on sale for 25% off. What is the sale price?
$45
What is the solution set for: 2x - 10 > 14
x>12
Find the area of a triangle with a base of 10 cm and a height of 6 cm.
30 cm2
A bag has 3 red, 2 blue, and 5 green marbles. What is the probability of picking a blue marble?
1/5 or 20%
Solve:
12 - (-4)
16
If a 5-pound bag of apples costs $7.50, what is the unit rate (constant of proportionality)?
$1.50 per pound.
When solving the inequality $-4x < 12$, what happens to the inequality sign when you divide by -4?
It flips (becomes "greater than")
A cereal box is 10 inches tall, 8 inches wide, and 2 inches deep. What is its volume?
160 in3
In a box plot, what does the "box" represent?
The Interquartile Range (IQR) or the middle 50% of the data.
Solve:
-5 x -8
40
A store buys a shirt for $20 and marks it up by 40%. What is the retail price?
$28
Write an equation for: "The sum of twice a number and 7 is 15."
2x+7=15
Find the circumference of a circle with a diameter of 10 units (use 3.14 for pi)
31.4 units
If you roll a 6-sided die 60 times, how many times would you predict rolling a 4?
10 times
Convert 3/8 to a decimal
0.375
A recipe for fruit punch calls for 3 cups of orange juice for every 5 cups of lemonade. If you want to make a large batch of punch using 12 cups of orange juice, how many cups of lemonade will you need?
20 cups
Solve for x: x/3 - 4 = 2
18
Find the volume of a triangular prism where the base triangle area is 15 sq ft and the prism height is 10 ft.
150 ft3
What is the difference between the Median and the Mean?
Median is the middle value; Mean is the average value.
Solve:
2 1/2 divided by 1/4
10