Practice Test 7

A library has 12,456 fiction books and 8,912 non-fiction books. The library also has 3,450 magazines. The librarian wants to estimate the difference between the number of fiction and non-fiction books by rounding each number to the nearest thousand. What is the librarian's estimate?

A warehouse started with 9,855 boxes. In one week, shipments of 1,208 boxes, 985 boxes, and 2,040 boxes were sent out. Rounding each number to the nearest hundred, what is the estimated number of boxes remaining in the warehouse?