Yeah, I feel that way too.
I think that they want to introduce students to how calculators work. I know that unless a kid learns how to work a calculator before high school, it makes it really hard to do higher level math that needs to be done with a calculator.
However, I think that it's too easy for kids to get hooked on using it and not be able to do it without the calculator. I would recommend that you put the calculator up at home and only allow judicious use of it.
If you end up having this problem with your child, see if you can find the Wishbone episode where the boy can't do his math homework without his calculator. He makes up excuse after excuse, but it isn't until the neighbor who is having a yard sale hires him and offers a PERCENTAGE of sales, with NO calculator to figure it, that he finally learns how to do the math. Then he actually understands the concept behind it.
The point is that kids need to understand the math before doing it on a calculator. Hopefully you can determine that before allowing her to routinely use it for basic math.
Dawn