Ratio, Proportion, and Percent Test V2

Front

What is a ratio?

Back

A ratio is a comparison of two quantities expressed as a fraction, indicating how many times one value contains or is contained within the other.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you calculate the percent of change?

Back

Percent of change = (New Value - Old Value) / Old Value × 100%.

Front

What is the formula for finding the unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

If Earl runs 96 meters in 48 hours, how many meters does he run per day?

Back

Earl runs 48 meters per day.

Front

What does it mean if a scale on a map is 1 inch: 80 miles?

Back

It means that 1 inch on the map represents 80 miles in reality.

Front

How do you determine who offers a better deal when comparing prices?

Back

Calculate the cost per unit for each option and compare them.

Front

If Eddie started with 30 tickets and ended with 20, what is the percent of change?

Back

The percent of change is a decrease of 33%.

Front

How do you find the distance on a map using a scale?

Back

Distance on the map = Actual Distance / Scale Factor.

Front

What is the unit rate if Roberto charges $48 for 5 hours of swimming lessons?

Back

Roberto's unit rate is $9.60 per hour.