1. There are 9 crows perched on the branch of a tree. How many feet are there on the branch?   2. A starfish has 5 arms. How many arms do 6 starfish have?   3. There are 6 butterflies. Each butterfly has 5 black dots and 4 yellow dots. How many black dots are there in all?   4. There are 2 lions and 4 tigers in a circus show. How many legs are there in all?   5. A magician has 4 hens. He makes each hen lay 6 eggs. How many eggs are there in all?