Estimating the annual interest rate with an ordinary annuity. Fl in the missing annus interest rates in the tolowing table for an ordinary arnuity stream Annual Interest Rate Future Value Annuity Present Valee 50.00 $640 00 $398 5$0.00 $650 00 18 $000 $1.82599,0000 631 298 73 Annual Interest Rate Payments or Future Value Annuity $640.00 3985 $1 982.5 650 00 t Value 10 18 45 80 % iRound to two decanal places } % (Roundto two dec mal places). %