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Rational number word problem: school report

First visualize this word problem then use subtraction and multiplication of decimals and fractions to get at the answer. Created by Sal Khan.

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• i understand this but the vidio did not help me with my question
• why would you divide 8.50 to find the margin
• because you would have half on one side and half on the other if the Margin on the left was 8.50 then the other side would equal it
• What does centered mean ?
• It means to put a object in the center of a paper
• why would you divide 8.50 to find the margin
• Just like how Sal Khan states at , if the figure is centered, you must divide in order to make sure the margin fits both sides.
• What is the difference between "8 times faster" and "8 times as fast"?
• This is where English meets math. We have many ways in English of saying the same thing. There is no diffeence in your two phrases. Both would translate into "8 times" something in math..
• How do you do rational numbers
• How many times does Sal make a mistake in his vids