ratios and proportions

Front

What is a ratio?

Back

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a proportion?

Back

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor (GCF).

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What does it mean for a table to be proportional?

Back

A table is proportional if the ratios of the corresponding values are constant.

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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

What is the simplest form of the ratio 32:16?

Back

The simplest form of the ratio 32:16 is 2:1.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you determine the better buy between two products?

Back

To determine the better buy, compare the unit prices of the products.

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CCSS.6.RP.A.3B

Front

What is the unit price of a 12 pack of Coke for $3.50?

Back

The unit price is $3.50 ÷ 12 = $0.2917 per can.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the unit price of a 6 pack of Coke for $1.80?

Back

The unit price is $1.80 ÷ 6 = $0.30 per can.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a table shows values (2,4), (3,6), (4,8), is it proportional?

Back

Yes, because the ratios 2:4, 3:6, and 4:8 are all equal to 1:2.

Tags

CCSS.7.RP.A.2A