1. There are 100 crows perched on the branches of a tree. How many feet are there on the branches?   2. A starfish has 5 arms. How many arms do 13 starfish have?   3. There are 80 butterflies. Each butterfly has 3 black dots and 2 yellow dots. How many black dots are there in all?   4. There are 18 deer in a park. How many legs are there in all?   5. A farm has 61 hens. Each hen lays 2 eggs. How many eggs are there in all?