Solve each problem.
26 + 42 =
64 − 17 =
Round each number to the nearest 10.
42 → 27 → 54 →
217 → 334 → 297 →
What is the area of the rectangle below?
A library has 942 books. 104 books are checked out. The library then receives a donation of 60 books, how many books are in the library now?