Not getting the concept!

So there's 2 things my girls cannot get the concept of. The 1st being closest to the number wins. I tried this several weeks ago when they were in the bath because neither of them wanted to get washed first, so I said OK closest to my number wins! Now ever since then they "play" this all the time even when there's nothing to be settled. They say pick a number between 1-100. So everyone chooses and THEN they decide what their number is. I keep telling them they need to decide before everyone else chooses. It's just not comprehended!
The other being hide & go seek. They count to 10 then yell "you ready"?! And the other says "yes"! Which obviously gives away where they are hiding! After going straight to find the hider they switch places. Then the new hider gets in the EXACT same spot the other just was! And they continue to switch back & forth hiding in the same place! And somehow it's fun!! I just don't get it!! And obviously they don't either!LOL
"My Girls!"

How lucky the are to have each other, as the song playing says they'll look back and remember these times of playing together!