Unit 4, Proportional Relationships and Percentages

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 is constant.

Front

Define percentage.

Back

A percentage is a fraction expressed as a part of 100, representing how much of one quantity is contained in another.

Front

What does a 20% discount mean?

Back

A 20% discount means that the price of an item is reduced by 20% of its original price.

Front

How do you calculate the discounted price of an item?

Back

Front

What is the formula to find the length of an item that is a certain percentage longer than another?

Back

Front

If a pencil is 120 mm long and a marker is 9% longer, how do you find the length of the marker?

Back

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the true value.

Front

How do you calculate percent error?

Back

Front

If the price of a hat after a 20% discount is $18, how do you find the original price?

Back

Front

What is the relationship between original price and discounted price?

Back