Review Percent: Tape Diagrams & Double Number Line

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What does a tape diagram represent?

Back

A tape diagram is a visual model that uses rectangles to represent numbers and their relationships, often used to solve problems involving ratios and percentages.

Front

What is a double number line?

Back

A double number line is a visual representation that shows two related quantities along two parallel lines, helping to illustrate the relationship between them.

Front

If a store decreases its candy package by 20%, what does that mean?

Back

It means that the new amount of candy is 80% of the original amount.

Front

What is 100% of a quantity?

Back

100% of a quantity is the whole amount. For example, if the original package contained 50 ounces, then 100% is 50 ounces.

Front

How do you find 42% of 95?

Back

To find 42% of 95, multiply 95 by 0.42, which equals 39.9.

Front

What is the equation for a tape diagram that represents 3 parts out of 4?

Back

Front

Back

It represents a relationship where for every 1.33 units of x, there are y units, indicating a ratio of 4:3.

Front

How do you express 20% as a decimal?

Back

20% as a decimal is 0.20.