Percents and Word Problems

Front

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.

Front

How do you calculate the percent of a number?

Back

To calculate the percent of a number, multiply the number by the percent (as a decimal). For example, to find 20% of 50, calculate 50 x 0.20 = 10.

Tags

CCSS.6.RP.A.3C

Front

What is the formula to find the percent of a total?

Back

The formula is: (Part / Total) x 100 = Percent. For example, if 30 out of 150 students passed, the percent is (30/150) x 100 = 20%.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the top number (numerator) by the bottom number (denominator) and then multiply by 100. For example, 1/4 = (1 ÷ 4) x 100 = 25%.

Front

What does it mean to find a percentage increase?

Back

A percentage increase shows how much a value has grown compared to its original amount. The formula is: ((New Value - Original Value) / Original Value) x 100.

Tags

CCSS.6.RP.A.3C

Front

What does it mean to find a percentage decrease?

Back

A percentage decrease shows how much a value has fallen compared to its original amount. The formula is: ((Original Value - New Value) / Original Value) x 100.

Tags

CCSS.6.RP.A.3C

Front

If 60% of a class of 30 students are girls, how many girls are there?

Back

To find the number of girls, calculate 60% of 30: 30 x 0.60 = 18 girls.

Tags

CCSS.6.RP.A.3C

Front

What is the relationship between percent, fraction, and decimal?

Back

Percent is a fraction with a denominator of 100. To convert a percent to a decimal, divide by 100. For example, 25% = 25/100 = 0.25.

Front

How do you find the total when given a part and its percent?

Back

Use the formula: Total = Part / (Percent/100). For example, if 30 is 20% of a total, then Total = 30 / (20/100) = 150.

Tags

CCSS.6.RP.A.3C

Front

What is a markup percentage?

Back

Markup percentage is the amount added to the cost price of goods to cover overhead and profit. It is calculated as: (Selling Price - Cost Price) / Cost Price x 100.

Tags

CCSS.6.RP.A.3C