Front

What is a ratio?

Back

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

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

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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.

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CCSS.7.RP.A.2A

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide to find the unknown value.

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CCSS.7.RP.A.2C

Front

If you earn $15 every 3 weeks, how much do you earn in 1 week?

Back

You earn $5 in 1 week.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a bird flies 35 meters in 10 seconds, what is its speed in meters per second?

Back

The speed is 3.5 meters per second.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the ratio of girls to boys in a class with 12 girls and 16 boys?

Back

The ratio of girls to boys is 12:16, which simplifies to 3:4.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If the ratio of 6th graders to 7th graders is 4:1 and there are 8 7th graders, how many 6th graders are there?

Back

There are 32 6th graders.

Front

In a ratio of tenants to cars of 3:5, how many cars are there if there are 30 tenants?

Back

There are 50 cars.

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship between quantities.

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CCSS.6.RP.A.3A