Question

A Deer mouse is 7 1/4 inches long. If the tail is 1/2 its body length. How long is it tail?

Answer 1

For this you just have to solve 1 1/4 divided by 2. First you need to convert 1/4 to a decimal. You can think of it like money, and since four quarters make a dollar, and a quarter is 25 cents, 1/4 = 0.25. Now we have 7.25, and we just divide it by two.
7.25 / 2 = 3.62
It's tail is 3.62 inches. Hope this helps ^w^

Answer 2

if the tail is half the body length, then the body is 2 tails long.
That is, the whole mouse is tail+body = tail + 2tails = 3tails long
7 1/4 ÷ 3 = 29/4 ÷ 3 = 29/12 = 2 5/12 inches long