The library purchased 320 new books this year.
168 of the new books are fiction.
How many of the new books are not fiction?

The third grade class keeps track of all the pages they read.
They read 579 pages in March.
They read 145 more pages in April than in March.
How many pages did the third graders read in April?

The library had a book fair.
The sold 386 children's books.
They also sold 158 mystery books.
How many books did the library sell altogether?

The biking club enrolled 129 new members this month.
Now they have 605 members in the club.
How many members did they have at first?

The biking club has a goal to ride 874 miles in one month.
The have biked 292 miles so far.
How many more miles do they have left?