Asha plans to place vacation photos of her friends on a square bulletin board measuring 72 units by 72 units.

a) Which size of phot can be placed without any spaces or overlapping?

10 X 8
6 X 4
5 x 7

Would it be 6 x 4? because 72/6 = 12

Right. And 72/4 also comes out even.

Hmm -- If she used 10 x 8 photos, she'd have 2 units of spaces.

72 / 10 = 7 a remainder of 2

Which of the other two answers will work?

Thank you sooo much :)

b? So how many photos of that size can be placed on the bulletin board?

So would 30 photos be able to fit on the square bulletin board measuring 72 x 72

Along one side you could place 12 photos and along another side you could place 18 photos.

Multiply:

12 * 18 = ?

ohh... 216 photos can be placed on the bulletin board.

Yay! You're right!

Thanks again!!!!