Proportions-test (introductory)

Front

What is a proportion?

Back

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

Tags

CCSS.7.RP.A.2A

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.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

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

Back

$6.80 per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the formula for finding a unit rate?

Back

Unit Rate = Total Amount / Total Time.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

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.

Tags

CCSS.6.RP.A.3A

Front

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

Back

50 miles per hour.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

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.

Tags

CCSS.6.RP.A.3A

Front

How can you express a ratio?

Back

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

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

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.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2