It’s Worth Taking a Full Minute to Learn How to Add 9 and 6: A Response to the “Common Core” Critics

Quick: What’s 99 + 47?

No calculators.

It’s 146. Of course it’s 146. You know how I know that?

Because I rounded the 99 to 100… and then subtracted one from 47 to make up the difference.

I sure as hell won’t do this:

That would be a waste of time when rearranging the numbers in your head is a lot faster. That’s what’s the math teacher in the video below is trying to explain to a news reporter using the numbers 9 and 6:

9 and 6 aren’t the best numbers to use to show why this method is so powerful, I...