Question

holly is baking cookies for a bake sale each cookie needs 2 square inches of space on the cookie sheet. the cookie sheet is 11 inches by 15 inches. she wants to find out how many cookies will fit on the cookie sheet. how do i do this problem?

Answer 1

2 square inches means 2 x 2. So, for each cookie you need 4 inches of space, arranged in a square. First we find out how many cookies one can line up on the 11 inch side. Each side of the space needed for a cookie is 2, so we divide 11 by 2. The greatest number of entire cookies we can put along this side is 5. Now, we find out how many we can line up against the 15 inch side. 15 / 2 is 7.5, so we can fit seven on that side. Multiply 7 by 5 and we have our answer.