Question

Explain how multiplying with 6 is like multiplying with 3.

Answer 1

Multiplying with 6 is like multiplying with 3 because 6 can be divided by 3. So with that being said, anything multiplied by 6, is multiplied by 3, just doubled.

Answer 2

Because with both you can get the answer 18. You can do 6x3=18 
3x6=18 or 3x2=6 or 3x12=36 and 6x6=36 or 3x7=24 and 6x4=24 so with these two numbers you can get similar answers.