Posted by Lourane on .
Find the missing number
2/5 = /20
could you explain the steps I take to find the answer

math 4th grade 
Alyonka,
you need to divide 5 by 20.
Then with the number that you get you multiply 2 (the numerator).
That is your answer.
The reason that you take those steps is because whatever you do to the denominator you have to do to the numerator. 
math 4th grade 
ravi butthole,
5*4 = 20 which is your denominator. Then, you take the numerator(2) and multiply that by four because whatever you do to the bottom, you do to the top. 2*4= 8. The answer is 8/20 which simplifies to 2/5.

math 4th grade 
dariga,
5 and 20 are dinominators