Math Get the highest and lowest number

   Today for math My group called tapaono did our brain teaser. We had these numbers 1-2-3-4-5-6  And with + - x and divided by we had to make the lowest and the highest numbers with  1-2-3-4-5-6 we could not use 3 or over numbers and we could not only use one number. We had to figure out the highest and the lowest numbers (1-2-3-4-5-6) of each + - x and divided by. Here is my working out.