Proportional Review

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 30% of 60, calculate 60 * 0.30 = 18.

Front

What does 'mark up' mean in terms of pricing?

Back

'Mark up' refers to the amount added to the cost price of goods to cover overhead and profit.

Front

If 34% of a number is 51, how do you find the number?

Back

To find the number, divide 51 by 0.34. The number is 150.

Front

How do you find the remaining amount after spending a percentage of money?

Back

To find the remaining amount, subtract the spent amount from the total. For example, if you spend 85% of $20, you have $3 left.

Front

What is the formula for finding a percentage?

Back

The formula for finding a percentage is: (Part/Whole) * 100 = Percentage.

Front

What does it mean if a table does not represent a proportional relationship?

Back

It means that the ratios of the quantities in the table are not constant.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 30% becomes 0.30.

Front

What is the first step in solving a problem involving percentages?

Back

Identify the total amount and the percentage you need to calculate.

Front

If 60 students were polled and 30% said dogs were their favorite pets, how many preferred dogs?

Back

18 students preferred dogs.