charlee wants to send postcards to all of her family and friends but she does not have any postcards she does have 3 large sheets of poster board,each sheet can be cut into 12 postcards how many postcards can charlee make
You do 12*3 because if 1 sheet of poster board can make 12 post cards, and you have 3 poster boards you will need 3 lots of 12 which is equivalent to 3*12!
