Can you do this?

My son is ridiculous with math. I started quizzing him with multiplication before kindergarten. He got that from his dad though because I'm not a math brain lol

I'm pretty good at calculations without a calculator or paper, but they'll have to slow it down for me by at least a factor 10.

What are they doing? Oh to answer your question, absolutely not 🤣🤣

Got to let me write each number and sign if you want me to figure it out

No, I'm pretty sure I can't