Percent of a number: tax, discount, and more

Erika ate brunch at a restaurant. The bill came to $12,20. If she left a 15% tip, how much was the tip?

Write the percentage as a decimal.

15% = 0.15

Multiply the decimal by the amount of the bill. Multiply as you would multiply whole numbers, then write the decimal point in the answer.

The tip was $1.83.

The Sweater Shack if offering a 16% discount on sweaters. If the regular price of a sweater is $16.00, what is the discount?

The discount is $