Go Figure

"Mama does 8+5=10?" Dawson asked as he sat on the floor staring at his fingers.

"No buddy," I answered hoping he'd figure out the answer on his own.

"What about 5+6? Is that 10? Wait, no, 5+5 is 10," he arrived at triumphantly. "So what is 8+5?"

"13."

"Oh, is that the one that comes after 12?"