Of course, and we did. But, I continue to believe that allowing calculators on ALL mathematics work from a young age does the student a disservice. Calculators certainly have their place, but elementary school arithmetic is not that place.

Agreed. So I taught my eldest arithmetic at home and discouraged the schools from giving him more calculators until the sums involved more than two digits and other operators than the basic four. After the third calculator they got the message. Interesting aside: the teacher couldn't do anything beyond single digit arithmetic without reference to a calculator either. Pretty sad affair, and I really wonder how someone who does not understand the basics gets to be a teacher.