RMDs are simply a percentage of your IRA assets that must be withdrawn every year. Those percentages start at 3.65% of your IRA for a 71 year old and gradually increase from there.
See this table: http://www.themoneyalert.com/RMD-Tables.html
By my calculation, you are withdrawing 5% per year, so if you are 78 or younger, your RMD is satisfied for that particular account.
I would contact the administrator of your annuity IRA to confirm this.
