1. Stacy has 13 teddy bears. She gives away 4 of them to her best friend. How many teddy bears does she now have?   2. A fish tank contains 24 fish of which 6 are stationary. How many fish in the tank are moving?   3. There are 14 birds in a sanctuary of which 9 are yellow. How many birds are there of other colors?   4. A circus has 14 elephants. There are 9 elephants with tusks. How many elephants do not have tusks?   5. A magician starts with 18 doves and makes 9 doves vanish. How many doves remain?