Percents
What is 10% as a decimal?
0.10
Marbles are in a ratio of 3 red to 10 blue in a bag. What is this as a ratio?
3:10, 3 to 10 or 3/10
What is the probability of rolling an even number on a standard dice?
1/2 or 3/6
What is -7 + -7?
-14
Solve for x: 3x = 15
5
What is 15% of 250?
37.5
A bicyclist travels 6.5 miles in 2/3 hour. What is the average speed, in miles per hour, of the bicyclist?
9.75 or 9 3/4
Using the fundamental counting principal how many combinations of dinners can you have if you have 2 entrees, 5 appetizers, and 10 drinks?
Evaluate (-1/3) / (2/5)
-5/6
Solve for x: 3x + 8 = 20
4
What is the discount on a tv is you get a 10% discount on a $300 tv?
$30
A machine in a factory makes 2.25 pounds of nails in 1.5 hours. At what rate, in pounds per hour, does the machine make nails?
1.5
What is the probability of flipping a heads on a dime and then at most 2 on a standard dice?
2/12 or 1/6
−1.5 + 2/5 + (−7) + 2.6
-5.5
Solve for x: x/2 + -7 = 10
34
20% of what number is 30?
150
If a car travels 400 miles using 10 gallons. What is the miles per gallon?
40
What does interquartile range mean?
Length of the box or quartile 3 minus quartile 1.
The sum of two numbers is zero. If one of the numbers is 5, what is the other number?
-5
Solve for x: -2x + 5x + 7 = 10
1
The bill for a dinner at a restaurant is $58.20, before sales tax and tip. Sales tax is 5% of the dinner bill. Tip is 20% of the dinner bill. How much is the total bill including tax and tip?
$72.75
On a map, two cities are 2.8 inches apart. The map has a scale of 1 inch to 25 miles. How far apart, in inches, would the same two cities be on a map that has a scale of 1 inch to 40 miles?
1.75
A student’s science scores are shown below. 76, 82, 65, 82, 93, 63, 45, 82, 90, 74 What is the mode and how does it compare to the median?
Median is 79 which is less than the mode 82.
A scuba diver dives 24 feet below the water’s surface. The diver then rises 10 feet, stops, and then dives downward another 18 feet. How far, in feet, does the diver need to rise upward to reach the water’s surface?
32
Write the expression 1/2(18y − 2y+ 10) as the sum of two unlike terms.
8y + 5