It takes 1/2 of box of nails to build bird house. if you wanted to build 5 bird houses, how many boxes would you need?

For every birdhouse, you need 1/2 of a box of nails to build it.

Using that logic we can assume that for every birdhouse you add 1/2 to get to your final answer.

1 birdhouse: 2 birdhouses: 3 birdhouses: 4 birdhouses: 5 birdhouses:

1/2 2/2 3/2 4/2 5/2

Now, we know that the answer is that we need to have 5/2 boxes of nails to build 5 birdhouses.

5/2 can also be converted into 2 1/2.

So 2 1/2 boxes of nails would be needed is the final answer