Proportions

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

How do you set up a proportion to find an unknown value?

Back

You can set up a proportion by creating a fraction that compares two quantities and setting it equal to another fraction that compares two other quantities.

Tags

CCSS.7.RP.A.2C

Front

What is the cross-multiplication method in solving proportions?

Back

The cross-multiplication method involves multiplying the numerator of one fraction by the denominator of the other fraction and setting the two products equal to each other.

Tags

CCSS.7.RP.A.3

Front

If a test is worth 12 points and a student wants to score 75%, how do you express this as a proportion?

Back

The proportion is expressed as p/12 = 75/100.

Front

What is the first step to solve the proportion p/12 = 75/100?

Back

Cross-multiply to get 100p = 12 * 75.

Tags

CCSS.7.RP.A.3

Front

What is the solution to the equation 100p = 12 * 75?

Back

p = 90.

Front

What does it mean for two ratios to be proportional?

Back

Two ratios are proportional if they can be expressed as equivalent fractions.

Tags

CCSS.7.RP.A.2D

Front

Which ratio is proportional to 5/6?

Back

25/30 is proportional to 5/6.

Tags

CCSS.7.RP.A.2A

Front

How can you determine if two ratios are proportional?

Back

You can determine if two ratios are proportional by cross-multiplying and checking if the products are equal.

Tags

CCSS.7.RP.A.2A

Front

How do you write a proportion using a table of values?

Back

You can write a proportion by comparing corresponding values from the table.