6.1-6.4 Review

Front

What is the formula to calculate the percentage of empty seats in a theater?

Back

Percentage of empty seats = (Number of empty seats / Total seats) x 100

Front

If a movie theater has 250 seats and 225 are sold, how many seats are empty?

Back

25 seats are empty.

Front

What does it mean to find a percentage of a number?

Back

Finding a percentage of a number means calculating a part of that number based on the percentage given.

Front

How do you calculate 65% of a price?

Back

Multiply the price by 0.65.

Front

If the original price of a car is $7200, what is the cost if it is sold for 65% of the original price?

Back

$4680.

Front

What is 110% of a number?

Back

110% of a number is the number plus an additional 10% of that number.

Front

How do you estimate 110% of $801.50 without a calculator?

Back

Round $801.50 to $800, then calculate 110% of $800, which is $880.

Front

What is the total number of children if 40% are boys and 200 children attended the play?

Back

200 children attended the play.

Front

How do you find the number of girls if 40% of 200 children are boys?

Back

Number of girls = Total children - Number of boys = 200 - 80 = 120.

Front

What is the formula to find what number a percentage represents?

Back

If x is the number, then Percentage = (Part / Whole) x 100.