Random size and rounding generator

An excel document that will generate two whole or decimal numbers in order to round and size. The numbers will be randomly generated based upon the drop down selection from tens of millions down to thousands for whole numbers and less than one to tens of millions for decimals so its easy to differentiate by changing the range. The answer will be highlighted when button is clicked and a countdown timer will sound after the time selected has elapsed. A fun activity for children to do individually on laptops or as a group on an interactive whiteboard.