Proportions-test (introductory)

Front

What is a proportion?

Back

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

Front

How do you determine if two ratios form a proportion?

Back

Cross-multiply the ratios. If the products are equal, then the ratios form a proportion.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is expressed as a quantity per one unit.

Front

If Alycia earned $20.40 in 3 hours, what is her unit rate?

Back

$6.80 per hour.

Front

What is the formula for finding a unit rate?

Back

Unit Rate = Total Amount / Total Time.

Front

What does it mean if two ratios are not a proportion?

Back

It means that the cross-products of the ratios are not equal.

Front

If a car travels 150 miles in 3 hours, what is the unit rate in miles per hour?

Back

50 miles per hour.

Front

What is the slowest reading rate among these options: 3 pages in 9 minutes, 4 pages in 10 minutes, 5 pages in 13 minutes, 7 pages in 20 minutes?

Back

3 pages in 9 minutes.

Front

How can you express a ratio?

Back

A ratio can be expressed as a fraction, with a colon, or with the word 'to'.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, and they represent the same relationship between two quantities.