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

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the manual way.

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We did it the long[br]division way.

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

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

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

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I'm going to make the[br]number bigger.

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

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right by one spot.

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So we could say, 99.061[br]times 10 is going

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to be equal to 990.61.

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Notice we just moved[br]the decimal over to

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the right by one.

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

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99.061 divided by 10, we're[br]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[br]dividing by 10 twice.

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We're shifting to[br]the left twice.

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

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write it like this.

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We've already written[br]the problem.

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

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

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the left will divide[br]it by 10 again.

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

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

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

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makes it a little bit[br]easier to read.

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