Rates, Ratios, Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

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 solve for a variable in a ratio equation?

Back

To solve for a variable in a ratio equation, cross-multiply and then isolate the variable.

Front

What is a unit rate?

Back

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

Tags

CCSS.6.RP.A.2

CCSS.6.RP.A.1

Front

If 15/h = 5/6, what is h?

Back

h = 18.

Tags

CCSS.7.RP.A.3

Front

Are the ratios 10/12 and 20/32 proportional?

Back

No, they are not proportional.

Tags

CCSS.7.RP.A.2A

Front

If 8 oranges cost $1.00, how much do 48 oranges cost?

Back

$6.00.

Tags

CCSS.6.RP.A.3B

Front

Are the ratios 3/4 and 24/32 proportional?

Back

Yes, they are proportional.

Tags

CCSS.7.RP.A.2A

Front

What is the unit rate of Sira's jogging to walking?

Back

2/3 mile jogs for every mile walked.

Tags

CCSS.6.RP.A.2

CCSS.6.RP.A.1

Front

How do you determine if two ratios are proportional?

Back

Two ratios are proportional if their cross products are equal.

Tags

CCSS.7.RP.A.2A