You have one board that is 7/8 foot long. You want two 1/4 foot pieces. How much will be left after you cut the two pieces?

1/4 = 2/8

2/8 * 2 = 4/8

7/8 - 4/8 = 3/8

You will have 3/8

To find out how much will be left after cutting two pieces from a board that is 7/8 foot long, we first need to calculate the total length of the two pieces.

Each piece is 1/4 foot long, so the total length of the two pieces can be found by multiplying 1/4 by 2:

1/4 foot + 1/4 foot = 2/4 foot = 1/2 foot

Now, to determine how much will be left, we subtract the total length of the two pieces from the length of the original board:

7/8 foot - 1/2 foot = ?

To subtract fractions, the denominators (bottom numbers) must be the same. We need to make the denominators 8 in this case, so we'll convert 1/2 to have a denominator of 8:

1/2 = (1/2) * (4/4) = 4/8

Now we can subtract:

7/8 foot - 4/8 foot = 3/8 foot

Therefore, there will be 3/8 foot of the board left after cutting two 1/4 foot pieces.