Indices law - Law 4

$a^0=1$

How to remember $a^0=1$

Anything to the power zero is $1$

A number with the power zero is equal to 1

It doesn't matter how many people there are there is only one sun.

The sun is one?

One sun is one.

But why?

Try simple numbers you know first

We know $10/10=1$

But so too $10^2/10^2=1$

But this can be rewritten as $10^2\times 10^-2$

And rewritten again as $10^(2-2)=10^0$

So $10^0$ must be $1$

Memory text