Unit 2b Review

Front

What is the formula to calculate the percentage of a number?

Back

Percentage = (Part / Whole) * 100

Front

How do you calculate the discount amount when given a percentage discount?

Back

Discount Amount = Original Price * (Discount Percentage / 100)

Front

If a product costs $50 and has a 20% discount, how much will the product cost after the discount?

Back

Cost after discount = Original Price - Discount Amount = $50 - ($50 * 0.20) = $40

Front

What is the formula to find the percent grade based on correct answers?

Back

Percent Grade = (Number of Correct Answers / Total Number of Questions) * 100

Front

If a student answers 18 out of 20 questions correctly, what is their percent grade?

Back

Percent Grade = (18 / 20) * 100 = 90%

Front

How do you calculate the total earnings based on daily earnings and the number of days worked?

Back

Total Earnings = Daily Earnings * Number of Days Worked

Front

If Sarah earns $20 a day and works 5 days, what are her total earnings?

Back

Total Earnings = $20 * 5 = $100

Front

What is the formula to calculate the amount spent based on a percentage of earnings?

Back

Amount Spent = Total Earnings * (Percentage Spent / 100)

Front

If a person earns $50 and spends 30% of it, how much do they spend?

Back

Amount Spent = $50 * 0.30 = $15

Front

What is the concept of 'winning percentage' in sports?

Back

Winning Percentage = (Number of Wins / Total Games Played) * 100