Math End of Year Review

Front

What is the mean?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the total count of numbers.

Front

How do you calculate the percentage of a number?

Back

To calculate the percentage of a number, multiply the number by the percentage (in decimal form) and then divide by 100.

Front

What is the formula for profit?

Back

Profit = Selling Price - Cost Price.

Front

How do you find the total number of students if you know the percentage?

Back

If a certain percentage of students is known, divide the number of students by that percentage (in decimal form) to find the total.

Front

What does 15% of a number mean?

Back

15% of a number means 15 out of every 100 parts of that number.

Front

How do you calculate the mean from a table of values?

Back

To calculate the mean from a table, sum all the values and divide by the number of values.

Front

What is a variable in algebra?

Back

A variable is a symbol (often a letter) that represents an unknown value in mathematical expressions or equations.

Front

What is the difference between fixed costs and variable costs?

Back

Fixed costs do not change with the level of production or sales, while variable costs do change based on the level of production.

Front

How do you express a gain in terms of an equation?

Back

A gain can be expressed as the difference between the selling price and the cost price, often represented as: Gain = Selling Price - Cost Price.

Front

What is the relationship between percentages and fractions?

Back

Percentages are a way of expressing a number as a fraction of 100. For example, 25% is equivalent to 25/100 or 1/4.