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We're asked to write this right
here in word form, and

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I'm not saying it out loud
because that would give the

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answer away.

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We have 63.15 that we want
to write in word form.

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Well, the stuff to the left of
the decimal point is pretty

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straightforward.

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Let me actually color code it.

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So we have 6, 3.

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Let me do it all in
different colors.

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And then we have a decimal, and
then we have a 1 and a 5.

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There's one common way of doing
this, but we'll talk

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about the different ways you
could express this as a word.

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But we know how to write
this stuff to the left.

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This is pretty straightforward.

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This is just sixty-three.

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Let me write that down.

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So this is sixty-three.

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And instead of the decimal,
we'll write, and.

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Now there's two ways
to go here.

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We could say, and one tenth
and five hundredths, or we

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could just say, look, this
is fifteen hundredths.

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One tenth is ten hundredths.

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So one tenth and five hundredths
is fifteen

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hundredths.

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So maybe I can write it like
this: sixty-three and fifteen

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hundredths.

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Just like that.

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Now, it might have been a little
bit more natural to

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say, how come I don't say
one tenth and then five

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hundredths?

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And you could, but that would
just make it a little bit

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harder for someone's brain to
process it when you say it.

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So it could have been
sixty-three-- so let me copy

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and paste that.

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It could be sixty-three and, and
then you would write, one

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tenth for this digit right
there, and five hundredths.

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Sixty-three and one tenth and
five hundredths is hard for

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most people's brains
to process.

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But if you say, fifteen
hundredths, people get what

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you're saying.

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Not to beat a dead horse, but
this right here, this is 1/10

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right here and then this
is 5/100, 5 over 100.

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But if you were to add these
two, If you were to add 1/10

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plus 5/100 -- so
let's do that.

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If you were to add 1/10 plus
5/100, how would you do it?

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You need a common denominator.

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100 is divisible by both 10 and
100, so multiply both the

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numerator and denominator
of this character by 10.

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You get 10 on the top and
100 on the bottom.

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1/10 is the same thing
as 10 over 100.

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10/100 plus 5/100 is equal to
15 over 100, so this piece

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right here is equal to 15/100.

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And that's why we say
sixty-three and fifteen

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hundredths.

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