Math
posted by Dawn .
Hi...i asked a question about 45 minuets ago, and i have been working at it still. I still havn't gotten an anwser! Could somebody please help me!
The question is, "this staircase has 3 steps (their are 6 blocks lined up as a staircase) How many blocks would you need for a 2step staircase?
I already know that its 210 blocks..what i need is an expression/rule. PLEASE help!!

If a 3 step staircase needs 6 blocks , why do you need 210? You need to explain the problem better.