Kerst's tutor

Kerst was tired of doing his IXL (on-line math progress tracking program).   Last night he started listing 
off parts of the problems while Kendall was getting ready for bed.

"What is 27 x 3?"

I started saying "Think of it as 25 times 3 and an additional 6"

Kendall piped in "It is 40 plus 20 plus 21"

"What?" I asked.

"Yeah, it is 60 plus 21, so it is 81" 

All in a matter of under 10 seconds.

I can see what he did.   He learned in school that 27 is 20 and 7.   He is also learning
multiplication.   He likes to ask us random multiplication facts of larger numbers.   He must 
have gleaned from that exercise that 3 20's is 60 and that 3 7's is 21.

Smarty pants.  He's only 6!