Proportions Simple

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

If a/b = c/d, what is the cross-multiplication rule?

Back

The cross-multiplication rule states that a * d = b * c.

Tags

CCSS.5.NF.B.5B

Front

Solve the proportion: 2/3 = x/12

Back

x = 8.

Tags

CCSS.7.RP.A.2B

Front

What is the first step to solve a proportion?

Back

Identify the two ratios and set them equal to each other.

Tags

CCSS.7.RP.A.3

Front

If 4/5 = x/25, what is the value of x?

Back

x = 20.

Tags

CCSS.7.RP.A.2B

Front

What does it mean if two ratios are equivalent?

Back

It means they represent the same relationship or proportion.

Tags

CCSS.6.RP.A.3A

Front

Solve the proportion: 5/10 = x/20

Back

x = 10.

Tags

CCSS.7.RP.A.2B

Front

What is the formula for finding an unknown in a proportion?

Back

If a/b = c/x, then x = (b * c) / a.

Tags

CCSS.7.RP.A.2C

Front

If 3/4 = 6/x, what is the value of x?

Back

x = 8.

Tags

CCSS.7.RP.A.2C

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2