Roderic and Math

Last night I drove carpool to soccer practice. Three 10-year old girls were in the back of the van talking about stuff (loose teeth, how much the tooth fairy should give per tooth, things that make them queasy, etc.)

Roderic decided that it was getting too noisy back there and he said, "It's time for math. It is too noisy. What is 5+5?"
Girls reply, "10"
Roderic "1+1?"
Girls laughing questioningly, "2"
Roderic "16+7?"
Girls still laughing, "23"
Hyrum, "Why are they laughing?"
Mom, "Because they think he is the cutest 5 year old boy they have ever come across!"
Roderic, "What is 6+1?"
Girls, "7"

And it continued until they got to practice...