Making Sure

Beauty in the day: there were two of them, and they had a pass, which they handed over with an air of importance. “We need to get 10 copies of this.”
“Okay,” I responded dutifully, and held out my hand for the paper.
“We need 10 copies.”
“10 copies of this math.”
“Okay.” I extended my hand a little further.
“Please make 10 copies of this math.”
“Okay.” I sort of waved my hand a little.
“10 copies for my teacher.”
I tried a different tack.
“I think you need to give me that copy, so I can use it to make the 10 copies.”
This brought me a suspicious gaze. But as I am generally trustworthy, she handed over the paper, albeit slowly.
“My teacher needs 10 of those.”
Yes. 10 was what I had stuck in my mind, so I was relieved that we were still on the same page.
I brought back the copies, giving the original to one girl, and the copies to the other. For a moment it appeared that we might have an equality issue, but Logic won out, and they headed back to class with their mission accomplished.