sam mowed half of the yard on friday and half of the remaining grass on saturday what fractional part of yard still needs to be mowed

1/2 + 1/4 = 2/4 + 1/4 = 3/4

4/4 - 3/4 = ?

1/4

To determine the fractional part of the yard that still needs to be mowed, we need to calculate the portions that Sam has already mowed. Let's break it down step by step:

1. Sam mowed half of the yard on Friday. So, we can represent this as 1/2.

2. Now, we need to find out how much of the yard is remaining after Sam mowed half of it. To do this, we need to subtract the portion that Sam mowed from the whole yard. Since Sam mowed 1/2 of the yard, the remaining grass is also 1/2 of the total yard.

3. On Saturday, Sam mowed half of the remaining grass. If we take 1/2 of 1/2, we can calculate this as (1/2) x (1/2) = 1/4.

Therefore, the fractional part of the yard that still needs to be mowed is 1/4.