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

If Dawson worked 12 of the 25 minutes he attended class, what percent of the time did he work?

Back

48%.

Front

What percent of 400 pounds of bananas went bad if 20 pounds went bad?

Back

5%.

Front

In a conversation, if Mr. Fox says 5 words and Mrs. Barr says 45 words, what percent of the words are spoken by Mrs. Barr?

Back

90%.

Front

If there are 15 spiders and 5 snakes at an exhibit, what percent of the exhibit is spiders?

Back

75%.

Front

For every 4 red cars, there is 1 blue car. What percent of the cars are blue?

Back

20%.

Front

What is a double number line?

Back

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

Front

What is a bar model?

Back

A bar model is a visual representation that uses bars to show quantities and relationships between them, often used in solving percentage problems.

Tags

CCSS.7.RP.A.2C

Front

How can you use a double number line to find a percent?

Back

You can mark the whole on one line and the part on the other, then find the corresponding value to calculate the percent.