Ratios and Proportions Flashcard

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.

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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 the terms and then solve for the unknown variable.

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CCSS.7.RP.A.2C

Front

What is the ratio of peaches to apples if there are 10 apples and 15 peaches?

Back

The ratio of peaches to apples is 15:10, which simplifies to 3:2.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If Sam and Megan share 75 Skittles in a ratio of 4:1, how many Skittles does each get?

Back

Sam gets 60 Skittles and Megan gets 15 Skittles.

Front

What is the price per gallon if 4 gallons of gasoline cost $16.80?

Back

The price per gallon is $4.20.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If there are 5 boys and 7 girls, what is the ratio of girls to students?

Back

The ratio of girls to students is 7:12.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What does it mean to express a ratio in simplest form?

Back

Expressing a ratio in simplest form means reducing it to the smallest whole numbers that maintain the same relationship.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you convert a ratio to a fraction?

Back

To convert a ratio to a fraction, write the first term as the numerator and the second term as the denominator.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2