| In
arithmetic, the additive identity is |
 |
. |
This means that you
can add
0
to any number... and it keeps its identity!
The number stays the same!
Let's look at the
number
5.
Anyway we try to add
0
to it, the
5
just keeps coming back as the answer.


Go ahead and try it
with any number you can thing of... It always
works!
And, when something
always works in math, we make it a property:
|
The Additive
Identity
Property:
This is often
written in one line...

Where
a
is any real number. |
|
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