Math Is Fun Forum

Britnif

Member

Registered: 2008-04-24

Posts: 1

Division of Fraction

Problem is 10 divided by 3 1\3.
I know the answer is 3 but can't seem to figure out how to get it.
When I work it out I end up with:
10\1 divided by 10\3 (after inversing and making improper fractions)
then multiply across and I get 100\3
after making that into a mixed number I result in 33 1\3 however the answer is supposed to be 3. Logically 3 makes sense but when I work it out I can't get 3 for the life of me.

LuisRodg

Real Member

Registered: 2007-10-23

Posts: 322

Re: Division of Fraction

3 1\3 = 10/3

Last edited by LuisRodg (2008-04-24 11:03:00)

Ricky

Moderator

Registered: 2005-12-04

Posts: 3,791

Re: Division of Fraction

Well, that is the same thing as saying:

So if the 2nd equation holds, the first must hold as well.

---

"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

LuisRodg

Real Member

Registered: 2007-10-23

Posts: 322

Re: Division of Fraction

Last edited by LuisRodg (2008-04-24 11:17:21)

Britnif

Member

Registered: 2008-04-24

Posts: 1

Re: Division of Fraction

HA!  I forgot to inverse!!! That explains it all...YOU'RE BRILLIANT!