Proportions

Front

What is a proportion?

Back

When two ratios are equivalent and show the same value.

Front

If Martin's class has 28 students and 25% are home sick, how many students are home sick?

Back

7 students.

Front

What is the ratio used to find percent?

Back

part/whole = %/100.

Front

Solve for x: 4/28 = x/100

Back

x = 14.

Front

What is a ratio?

Back

A comparison of two quantities by division.

Front

How do you convert a fraction to a percentage?

Back

Multiply the fraction by 100.

Front

What is the relationship between ratios and proportions?

Back

Proportions are equations that state two ratios are equal.

Front

If 3 out of 12 apples are rotten, what percent of the apples are rotten?

Back

25%.

Front

What is the cross-multiplication method used for?

Back

To determine if two ratios are equivalent.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

2:3.