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In the last video, we divided
100 into 99.061, and we did it

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the manual way.

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We did it the long
division way.

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In this video, I just want to
show you a quick shortcut

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because we're dividing something
by a power of ten.

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If I have 99.061, if I multiply
by a power of ten,

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I'm going to make the
number bigger.

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Every time I multiply by 10, the
decimal would shift to the

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right by one spot.

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So we could say, 99.061
times 10 is going

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to be equal to 990.61.

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Notice we just moved
the decimal over to

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the right by one.

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If I were to do-- I'll just
arbitrarily switch colors--

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99.061 divided by 10, we're
going to shift the decimal in

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the other direction.

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This is going to be 9.9061.

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So when we divide by 100, we're
dividing by 10 twice.

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We're shifting to
the left twice.

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So if we start with 99.061
divided by 100-- let me just

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write it like this.

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We've already written
the problem.

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If we want to divide this by
100, moving it one spot to the

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left will divide it by 10, and
then moving another spot to

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the left will divide
it by 10 again.

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So 99.061 divided by 100 is
going to be equal to 0.99061.

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We're just going to shift the
decimal to the left by two.

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And we might want to put a
leading zero here, just so it

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makes it a little bit
easier to read.

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