Question 716850

How do I show my son how to solve this math problem:

4/5 times ___ = 2/5


Two examples:


2 * a = 6. Therefore, a = {{{6/2}}}


3 * b = 15. Therefore, b = {{{15/3}}}


Do you get it now?


{{{4/5}}} times _S_ = {{{2/5}}}. Therefore, S = {{{2/5}}} ÷ {{{4/5}}} ----- {{{S = (2/5) * (5/4)}}} ------ {{{S = (cross(2)/cross(5)) * (cross(5)/cross(4)2)}}} ------ {{{highlight_green(1/2)}}}