“Where can I find mental math stuff?”

From the mailbag:

"Dear MamaBear,

I've heard that there are resources online that can teach kids mental math.  Do you know where they are?

Sincerely,

Patrick from St. Louis"

Dear PfSL,

Ah, mental math!

The stuff that makes MamaBear sing in perfect harmony!

Here's some of me favorite resources, enjoy!

• Beat the Calculator
• Mental Math Shortcuts
• Mental Math Tricks

And don't forget:

d