This is a video on finding the distance
between points on a number line.  The question
states, the number line below depicks the
mean of 18.56 and the
value of 20.43.  Find
the distance between these two points.
Whenever we want to find the
distance between two points on a number
line what we do is we just subtract.
Subtract the smaller from the larger.
What we get is that the distance between
these two points will be
20.43 - 18,56.
I decided to do this subtraction by hand.
I can also use a calculator if you want.
I just try to subtract three minus six. I
can't,
so I borrow from the 4 make that 4
a 3.  Make the 3 a 13.
13 -  6 is 7.  Then, I need to
borrow to subtract again because you
can't subtract 3 - 5, so
instead we borrow.  We can't borrow from
the 0 so we have to borrow from the 20
and make that a 19.  Make that a 13. 13
minus 5 is 8.  Then 19 minus 18 is 1.  I
get 1.87.   I can
conclude that the distance between the point
18.56 and 20.43 is 1.87.
I'm done with the problem.
Thank you for watching this video.
