Percents using Double Number Lines or Bar Models

Front

What is a percent?

Back

A percent is a way to express a number as a fraction of 100. It is often used to compare quantities.

Front

How do you calculate the percent of a part compared to a whole?

Back

To calculate the percent, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

Front

What percent of 25 is 12?

Back

48% (calculated as (12/25) x 100).

Front

If 20 out of 400 bananas went bad, what percent went bad?

Back

5% (calculated as (20/400) x 100).

Front

What percent of 15 spiders is represented by 5 snakes?

Back

33.33% (calculated as (5/15) x 100).

Front

If 140 out of 200 cars are 5 years old or less, what percent are 5 years old or less?

Back

70% (calculated as (140/200) x 100).

Front

What percent of 5 boxes is shaded if 2 are shaded green?

Back

40% (calculated as (2/5) x 100).

Front

What is a double number line?

Back

A double number line is a visual tool that shows two sets of numbers, helping to compare ratios and percentages.

Front

How can a bar model help in understanding percents?

Back

A bar model visually represents parts of a whole, making it easier to see how much of the whole is represented by a percent.

Front

What is the relationship between fractions and percents?

Back

Fractions can be converted to percents by multiplying by 100. For example, 1/4 = 25%.