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Write six hundred forty-five
million five hundred
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eighty-four thousand
four hundred
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sixty-two in standard form.
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So let's tackle this
piece by piece.
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So the first part we
have six hundred
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and forty-five million.
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So let's think about that.
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So we have six hundred
and forty-five.
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But it's not just six
hundred forty-five.
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We have six hundred forty-five
millions.
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So we could view that as
645 times 1,000,000.
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One million is one followed
by six zeroes.
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So this piece right here is
this right over here.
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That is six hundred and
forty-five million.
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And what is that when
we write it out?
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If we were to multiply this
out, this is equal to-- it
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would be 645 times this 1 with
six zeroes behind it.
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So this would be equal to 600--
I'll write it like this.
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This is equal to 645, and then
we have our six zeroes.
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One, two, three, one,
two, three.
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That's just this part
of the number.
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And I'm going to do it kind
of slow and do all of the
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different parts of the problem,
but once you get some
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practice, you'll find that these
are a bit second nature,
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and you won't have to go through
all of these steps.
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You'll just be able to
write the number.
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Now, let's move on
to the next part.
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We have five hundred
and eighty-four.
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Let me write that down.
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Well, I'll write it like this.
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584 thousand.
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So let me write the thousand.
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So 584 thousand.
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So it's 584 times 1,000.
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And what's that going
to look like?
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So that's this whole
part right here.
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So 584 times 1,000
is equal to what?
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Well, it's going to be 584 with
three zeroes behind it,
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or you could view it as 584
times the 1, and then you're
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going to have three zeroes
in the final answer.
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So it's going to be 584,000.
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We have our three zeroes
at the end.
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584, three zeroes.
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So that's that part.
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And then finally, we have four
hundred sixty-two, and that's
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just 462, straight up.
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You could view it as 462 ones.
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So then you just
have 462, which
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obviously equals just 462.
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Now our number is all
of these combined.
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It is 645,000,000 and
584,000 and 462.
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So one way to think about it
is that you could add these
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three numbers.
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So if we were to add them,
we get 645,584,462.
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Now, I said it'll become a
little bit of second nature to
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you in a little bit, and the way
to think about that, the
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easiest way to think about that,
is millions will have
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six zeroes behind them,
thousands will have three
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zeroes behind them, and just
regular numbers have no zeroes
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behind them.
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So what you can do when you
kind of want to learn it
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second nature, you'll just look
at the six hundred and
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forty-five million, so you'll
write 645, and you'll kind of
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keep in the back of your mind
that you're going to have to
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have six more digits to
the right of this.
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And then you say five hundred
and eighty-four thousand, so
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then you have your five hundred
and eighty-four
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thousand, so then you write that
down, 584,000, keeping in
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mind that you're going to
need three digits to
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the right of that.
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And so if they didn't tell us
462, we would just put three
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zeroes here, and that would also
fulfill the six zeroes we
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need behind 645,000,000.
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But then they tell us 462, so we
just write that right here.
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462.
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