sieve of eratosthenes

[mamasmith]

Use a hundreds board to to complete the following:
Cross out the #1 b/c it is not a prime number. Circle the #2 with yellow b/c it is the smallest prime #. Cross out every multiple of 2 with yellow. WRITE AN ALGEBRAIC EXPRESSION FOR THE #S YOU CROSSED OUT WITH YELLOW. HELP!!!

 

[pka]

Use a hundreds board to to complete the following: Cross out the #1 b/c it is not a prime number. Circle the #2 with yellow b/c it is the smallest prime #. Cross out every multiple of 2 with yellow. WRITE AN ALGEBRAIC EXPRESSION FOR THE #S YOU CROSSED OUT WITH YELLOW. HELP!!!

I fail to understand what you are asking.
Can you follow directions? They are rather clear are they not?
You do know a multiple of #2 when you see it. Don't you?

Please tell us what you do not understand there.

 

[mamasmith]

yes i recognize multiple of 2. I need help for writing the algebraic expression for the problem.

 

[pka]

yes i recognize multiple of 2. I need help for writing the algebraic expression for the problem.

Well if \(\displaystyle k\in\mathbb{Z}^+,~\&~k>1\) then \(\displaystyle 2k\) is x-ed out.