### Video Transcript

Sophia’s bottle contains
three-quarter liters of water. If she drinks one-eighth liters
from her bottle, how much water in liters is left over?

We know that Sophia’s bottle
contains three-quarter liters of water. If she drinks another eighth of a
liter, how much water will she have left? We have to find three-quarters take
away one-eighth. Before we can subtract, both of the
denominators need to be the same. We know that eight is a multiple of
four, so let’s see how many eighths are equal to three-quarters. Eight is the common
denominator. How do we get from four to
eight? We know that four times two is
eight, so we need to multiply our numerator by two. And we know that three times two is
six.

Now that we know that
three-quarters is equal to six-eighths, we can subtract. If we’ve got six-eighths and we
take away one of them, we’ll have five-eighths left. If Sophia’s bottle contains
three-quarters of a liter of water and she drinks an eighth of a liter from her
bottle, she will have five-eighths of a liter left over.