Question

Benny bought 4 new baseball cards to add to his collection. The next day his dog ate half his collection. There are now only 41 cards left. How many didhe start with?

Answer 1

You work backwards so if half is 41, he had double that before the dog ate half the collection. So he had 82 card after adding 4 new cards so you subtract 4 and your answer is 78 cards.

41 x 2 = 82
82 - 4 = 72