how do I multiply 30.30

Question

please multiply 30x30.

Answer 1

Are you looking for factoring?

 

     30    x    30

     /\           /\

    3 10       3 10

       /\           /\

      2 5         2 5

 

3² x 2² x 5² =9 x 4 x 25 = 9 x 100 = 900

 

or 30 x 30 = 30² =900

 

 

 

Answer 2

30 x 30 can be broken down into 10 x 30, which equals 300, and 300 x 3, which equals 900.