partnership payment

How much am i actually getting paid in terms of CPM?

Your Revenue Share
We will pay you 70% of all money we actually receive and retain from YouTube for
advertising displayed on Content viewed on your Channel, less standard
commission fees for premium advertising or sponsorship campaigns that we may sell
on your behalf. For clarity, a different revenue share may apply in instances where
your Content includes third party-licensed materials (e.g., a cover video); you will be
informed of any such differences in advance and have the opportunity to accept or
reject those terms for use of third-party licensed materials.
We will pay you your share of the money we receive within 30 days following the
end of each calendar month that we receive it in. If the compensation owed to you in
any given month is less than US$100, your earnings will be transferred over to the
next month for payment. We will pay you through your PayPal or similar online,
approved account or, at our discretion, by mailing you a check. We are entitled to
deduct standard wire transfer or payment processing fees where applicable. We may
also deduct from any sums due to you, any sums that you may owe to us at any time.

70%.
If you make 100$ you will get 70$.

is this a standard contract?

It's seems so. For further information, check out this thread, it has already been discussed.
Might not be up to date though.

blackhat-seo/youtube/462281-network-offers-highest-cpm.html

There's no CPM set in stone, even though the percentage stays the same. Networks structure it this way so that if your ad brings in a higher CPM, you see more of that money instead of being locked into a fixed rate CPM.

Exactly what they told you. If you bring them more clicks of ads, you'll earn 70% of the total revenue.

Cheers,
AG