Funny Numbers!

We know more than nine is "too many" for place value. So when we have more than nine we have to make a 10 and send it over into the next column.  

This is the funny number 60 13 but we changed it into 73!!

The funny number is "70 15" but we turn it into 85! 

"40 11" turns into 51!!

"80 11" turnsinto 91!!