Joe caught 20 fish. George caught 23 fish. How many fish did Joe and George   catch? After reaching home, they found that 12 fish were missing. How many fish did they finally have after reaching home?

Your grandma gave you a magic plant one day. When you water it, it grows in a srange way.

            At 6:00 am it grew 3 in tall.

            At 7:00 am it grew 5 in tall.

            At 8: 00 am it grew 9 in tall.

            At 9:00 am it grew 15 in tall.

            At 10:00 am it grew 23 in tall.

How tall will it be at 11:00 am?   ____________