Respuesta :

4.3215 rounded to the nearest thousandths is 4.322.
Ok, ever heard of the rule, Four and below, let it go. Five and above give it a shove.
So, let's start at the very end of the line...it's a five so we give it a shove, meaning, we round up! 
Since the next column is the thousands, we stop there and have our new number, 4.322!
Hope this helps! Have a great day!