Ok, let me debug the basics of Directed Numbers.
Over here on my left we have a number line;
it’s horizontal and you might notice some
there are numbers.
Right in the middle of it, right the vivid
here is right is zero.
To the right a positive numbers: one, two,
three all the way up to six and on the left
we have negative numbers with a little minus
in front of each number; that’s how we referred
to negative numbers.
And negative numbers refer to a loss or a
decrease or below, or lower.
Now to the right, we have numbers that are
positive obviously and now we refer to an
increase, to adding, to plusing and also to
depositing.
So the guys are over here and the losses are
over here.
And the way to read a number line is by identifying
being able to put in points.
So let’s say we want to put in a point and
someone said, “Put the point at number 3”.
Very simple, very straightforward we just
got here and put we a point right there just
above the 3 and on the number line that could
be 3 or X=3.
If someone said, “Could you find -2 for
me”, you go to the zero go to the left 2
points and just put a point there.
So that’s pretty easy, nothing could be
simpler.
Now what we’re about to do is that we are
about to do some examples on how to work with
this Positives and Negatives in such a way
that we can come up with answers.
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