Unit 4 Flashcard( %)

Front

What is the formula to find the original amount when given a percentage of it?

Back

Original Amount = Given Amount / (Percentage / 100)

Front

If 15% of a ribbon is 21 inches, how do you calculate the original length of the ribbon?

Back

Original Length = 21 inches / 0.15 = 140 inches.

Front

How do you calculate the cost per item?

Back

Cost per item = Total Cost / Number of Items.

Front

If Maria bought 10 pencils for $4.50, what is the cost per pencil?

Back

Cost per pencil = $4.50 / 10 = $0.45.

Front

What is the formula to calculate a percentage of a total amount?

Back

Percentage Amount = Total Amount x (Percentage / 100).

Front

If Grace earned $90 and saved 19%, how much did she save?

Back

Saved Amount = $90 x 0.19 = $17.10.

Front

What does a 25% discount mean?

Back

A 25% discount means you pay 75% of the original price.

Front

How do you calculate the final price after a discount?

Back

Final Price = Original Price - (Original Price x Discount Percentage).

Front

If a computer costs $2,428 and has a 25% discount, what is the final price?

Back

Final Price = $2,428 - ($2,428 x 0.25) = $1,821.

Front

How do you convert a fraction to a decimal?

Back

Divide the numerator by the denominator.