Solving common core maths problems #2
Common core
mathematics are essentially fun and tricky. Not necesserly in that
order. Let's solve some of these maths problems that became meme over
the internet. In this serie, you will find a few ways to improve
yourself at solving common core maths. Because, if you think a bit to
the last problem you find on your favorite social network, it was kind
of tricky (and tricky is an euphemism).
However, if you
have the feeling common core problems are tricky, hard or just weird,
that's only because they are based on simple and very easy problems.
These problems are then complicated to make them looking hard. But they
are not - and if you can't solve one of them within 2 minutes, you are
not dumb.
The Problem
Write $A = 0.201420142014...$ as the ratio of two integers $\frac{p}{q}$A solution
$10000*A = 2014.201420142014$$ = 2014 + A$
$10000*A = 2014 + A$
$9999*A = 2014$
$A = \frac{2014}{9999}$
Problem solved!
Clément
Fondateur du blog Point Carré et philognoseur. Ecrit sur des
sujets variés, essentiellement pour ses études et parfois juste par
plaisir !