Houghton Mifflin answer keys are located at hmhco.com. This website is the Houghton Mifflin Harcourt website and offers answer keys for school subjects such as math, reading, physics and more. The answer keys are available for all grade levels.
This website offers learning resources for teachers in a classroom and for students learning at home with parents or tutors. Answer keys are available with a purchase in paperback, softcover or hardcover books. Houghton Mifflin provides answer keys online as well as for printable resources. The DVD, CD and kit learning resources also include an answer key. Transparencies purchased for the classroom include and answer keys.