Cross Multiplying

Front

What is cross multiplication?

Back

Cross multiplication is a method used to solve proportions by multiplying the numerator of one fraction by the denominator of the other fraction.

Tags

CCSS.7.RP.A.3

Front

Back

The setup is: a * d = b * c.

Tags

CCSS.5.NF.B.5B

Front

Back

n = 8.

Tags

CCSS.4.NF.A.1

CCSS.3.NF.A.3B

CCSS.3.NF.A.3A

Front

Back

x = 25.

Tags

CCSS.7.RP.A.3

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

Back

y = 3.

Tags

CCSS.7.RP.A.2B

Front

Back

n = 2.5.

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

Front

What does it mean to solve a proportion?

Back

To solve a proportion means to find the unknown variable that makes the two ratios equal.

Tags

CCSS.7.RP.A.2C

Front

Back

n = 8.

Tags

CCSS.4.NF.A.1

CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

Front

What is the first step in cross multiplying?

Back

The first step is to multiply the numerator of the first fraction by the denominator of the second fraction.

Tags

CCSS.4.NF.A.1

CCSS.3.NF.A.3B

CCSS.3.NF.A.3A