| These will get messier, so
I've got a second lesson on this once you learn about
division of decimals.
So, here's the simple stuff!
We just keep those decimal
place values in mind...
These guys are a snap to
convert!
What about a fraction
like
 ?
If we can turn the
denominator into a
10 or
100 or 1000 (a
power of 10), then we can pop it!
Check it out:
Here's another one:
One more:
OK, OK, OK! Wait a minute
here! How on earth did I know to multiply that guy
by 125?!
Heh, heh... Because I'm
smart! Alright, I'll tell you how I knew.
I know that I want that
denominator to be 10 or
100 or
1000 or
10,000...
a power of 10... And
10's are made up of
2's and
5's:
So, we need a PAIR of
2's and
5's!
Look at this guy:
Here's another one:
Note that this will ONLY work
if your denominator is made up of nothing but
2's and/or
5's.
Can you convert
this way?
But, there will be another
way... There will be another way.
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