Ratios & Proportions
If the ratio of teachers to students is 1:20 and there are 3 teachers, how many students do you have?
60
What is the Identity Property?
Anything plus 0 or times 1 will equal itself.
What does % mean?
Out of 100
What is a net?
A 2D image that is the 3D shape unfolded.
What is the Median?
The center value in an ordered list.
If I travel 2 miles, how many feet did I travel
10,560
What is the difference between expressions and equations?
Expressions do not have an equal sign
What is 58.9% as a decimal?
0.589
What is the formula for Area?
Length x Width = Area
How do you find the Mean?
Add up all your values and then divide by the count of values.
If I slice a pizza into 8 slices and eat 3 of them, what percentage of the pizza do I have left?
62.5 %
In the equation: 5g = d. What is the independent variable.
What is 0.0345 as a percentage?
3.45%
What is the formula for Volume?
Length x Width x Height = Volume
What are the 3 steps to finding the MAD Value.
1. Find the Mean
2. Calculate distances/deviations.
3. Find the Mean of those deviations.
Person A buys 15 raffle tickets for 25 dollars.
Person B buys 9 raffle tickets. How much did they spend?
15 dollars
A sports team buys 500 water bottles, the team has to drink 45 of them every game. What expression represents the number of water bottles remaining after the team plays x games?
500 - 45x
If 100% of a record collection contains 544 records, how many records is 50% of the collection?
272 records.
What is surface area?
It is the total area for ALL sides of a 3D shape.
A lower MAD value means what?
A higher consistency.
Of the 50 people in a class, 76% live less than 15 miles from school. How many students live more than 15 miles from school.
12 students
What will a graph of the inequality x > 8 look like?
The line will travel right from eight where there is an open circle.
If a recipe calls for 2/3 cups of flower for a batch of cookies and a baker has 30/4 cups of flower, how many full batches can he make?
11 batches.
Describe a right triangular prism.
A 3D object that looks like a right triangle expanded length-wise.
Why might we talk and compare medians instead of means?
To correct for outliers in our data.