It's a group of ten, ding dong.

I just told my kids they had "siete minutos" to finish their lunch.

"What does that mean?" some asked.

"Seventeen minutes," Tyshaun answered.

"No, seven minutes." someone countered.

"Oh well, I was close," He said. "Just take away the one from 17 and it's 7."

"It's not a 1," Amalia said. "It's a group of ten, ding dong."

Putting aside the "ding dong" for now, that was a very happy mathematical moment for me.