6.5B Percents

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 '%'.

Front

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

Back

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

Front

What percentage of 30 is 12?

Back

40% (calculated as (12/30) x 100).

Front

What percentage of 45 is 18?

Back

40% (calculated as (18/45) x 100).

Front

If a manager spends $90 out of a $500 budget, what percent of the budget is spent?

Back

18% (calculated as (90/500) x 100).

Front

What percentage of 8 skittles is 7 skittles?

Back

87.5% (calculated as (7/8) x 100).

Front

If 36 members represent 30% of a group, how do you find the total number of members?

Back

Total members = Part / Percentage = 36 / 0.30 = 120.

Front

What is the formula to convert a fraction to a percent?

Back

Multiply the fraction by 100 and add the percent symbol (%).

Front

How do you find the percent increase from 50 to 75?

Back

Percent Increase = ((New Value - Old Value) / Old Value) x 100 = ((75 - 50) / 50) x 100 = 50%.

Front

What is the percent decrease from 100 to 80?

Back

Percent Decrease = ((Old Value - New Value) / Old Value) x 100 = ((100 - 80) / 100) x 100 = 20%.