December had 108 books to move from the living room to the bookshelf in her bedroom.  She could carry nine books at a time.  How many trips did she make to move her all books?

Willow was planted some flower pots with morning glories for her yard.  One package of seeds planted three flower pots.  How many packages of seed did Willow need to plant all 18 of her flower pots?

Izzy created a riddle about a pool party she went to over the summer.  She wrote:  There were some people and some dogs at the pool party.  There were 30 legs altogether.  How many people were there?  How many dogs were there?  How many different correct answers can you find?

Alex spilled a bin with 156 markers in it.  They dropped out of their boxes as they fell.  Alex had to put them back into the boxes when she picked them up.  If each box held 12 markers, how many boxes did Alex fill when she finished putting all the markers away?