Register to reply

How to make this fraction

by Loonyplz
Tags: fraction
Share this thread:
Feb4-14, 01:39 AM
P: 1
how would i convert 7.8 x 10^-3 = 39/5000 / 7.8 x 10^-3 into a fraction on my calculator?

I know the result is 0.0078 but I don't know how to get it, thanks!
Phys.Org News Partner Mathematics news on
Professor quantifies how 'one thing leads to another'
Team announces construction of a formal computer-verified proof of the Kepler conjecture
Iranian is first woman to win 'Nobel Prize of maths' (Update)
Feb4-14, 06:42 AM
P: 1,396
You want to start with 7.8 x 10^-3 and end up with 39/5000 ?

10^(-3) = 1/1000, so 7.8 x 10^-3 = 7.8/1000. Multiply the numerator and the denominator by 10 to get integers and you end up with 78/10000. Remove common factors from this and you get the answer.

Register to reply

Related Discussions
Proof to find fraction inbetween to fraction General Math 3
How is multiplying by a fraction the same as dividing by the inverse of that fraction General Math 2
Find closest fraction to another fraction Precalculus Mathematics Homework 3
Evaluate fraction x fraction Precalculus Mathematics Homework 4
Expressing this algebraic fraction as partial fraction Precalculus Mathematics Homework 6