Review Percent: Tape Diagrams & Double Number Line

Front

What is 100% of a quantity?

Back

100% of a quantity is the whole amount of that quantity. For example, if a candy package originally contains 50 ounces, then 100% of that package is 50 ounces.

Front

How do you calculate a percentage decrease?

Back

To calculate a percentage decrease, multiply the original amount by the percentage decrease (as a decimal) and subtract that from the original amount. For example, a 20% decrease from 50 ounces is calculated as 50 - (50 * 0.20) = 40 ounces.

Tags

CCSS.6.RP.A.3C

Front

What does it mean to increase a quantity by a percentage?

Back

To increase a quantity by a percentage, multiply the original amount by the percentage increase (as a decimal) and add that to the original amount. For example, increasing 36 cookies by 50% means 36 + (36 * 0.50) = 54 cookies.

Tags

CCSS.6.RP.A.3C

Front

What is a tape diagram?

Back

A tape diagram is a visual representation used to show the relationship between quantities. It helps in understanding addition, subtraction, multiplication, and division of numbers.

Front

What does a double number line represent?

Back

A double number line is a visual tool that shows two related sets of numbers, helping to illustrate relationships between them, such as ratios or percentages.

Tags

CCSS.7.RP.A.2D

Front

How do you find the markdown amount when given a discount percentage?

Back

To find the markdown amount, multiply the original price by the discount percentage (as a decimal). For example, for a table costing $85 with a 35% discount, the markdown is 85 * 0.35 = $29.75.

Tags

CCSS.6.RP.A.3C

Front

What is the new price after applying a discount?

Back

The new price after applying a discount is calculated by subtracting the markdown amount from the original price. For example, if the original price is $85 and the markdown is $29.75, the new price is 85 - 29.75 = $55.25.

Tags

CCSS.6.RP.A.3C

Front

What does it mean if a tape diagram shows a decrease?

Back

If a tape diagram shows a decrease, it visually represents a reduction in quantity, indicating that the new amount is less than the original amount.

Tags

CCSS.1.OA.A.1

Front

How do you calculate the total amount after a percentage increase?

Back

To calculate the total amount after a percentage increase, multiply the original amount by the percentage increase (as a decimal) and add it to the original amount. For example, for an increase of 50% on 36 cookies, the total is 36 + (36 * 0.50) = 54 cookies.

Tags

CCSS.6.RP.A.3C

Front

What is the formula for finding a percentage of a number?

Back

The formula for finding a percentage of a number is: (percentage/100) * number. For example, to find 20% of 50, calculate (20/100) * 50 = 10.

Tags

CCSS.6.RP.A.3C