A builder wants to nail a 2 1/4 foot extension to a board that is 7 9/12 feet long. How long will the board be after her work? Express your answer in lowest terms.
A reasonable estimate for this problem is approximately
( A. 6 B. 9 C. 10 ) feet.
A common denominator to use is ( A. 12 B. 16 C. 16) .
The board will be
A. 5 2/3 B. 6 C. 9 5/8 D. 10 feet long.
