1.  Barbara has 23 teddy bears. She gives away 12 of them to her best friend. How many teddy bears does she now have?   2. A pond contains 437 fish of which 23 are stationary. How many fish in the tank are moving?   3. There are 631 birds in a sanctuary of which 62 are yellow. How many birds are there of other colors?   4. A jungle has 849 deer. There are 378 spotted deer. How many deer do not have spots?   5. A magician starts with 19 rabbits and makes 7 rabbits vanish. How many rabbits remain?