Grandson in 3rd grade. been a long time for me doing equivalent fractions. know what they are but if u have 3/5 how do u find the the equal number mof 15ths????

Question

anonymous · Answer

an equal number of 15ths would be 9/15 because whatever you do to the bottom number on 3/5, you have to do to the top number, so that would be 3 times 5 to get 15 and 3 times 3 to get 9, which then you get 9/15

phi · Answer

A short video might help, http://www.khanacademy.org/video/fractions-in-lowest-terms?topic=developmental-math-1-1

precal · Answer

just look for the same number to multiply to the fraction.
In this case, 3/5=?/15
5 times 3 is 15
so multiply 3 times 3 and the numerator is 9
you are really multiplying the original fraction by 3/3  which is 1