MAP Recommended Practice
In this lesson, we learn how to represent 109% using shading. We discover that 109% is equivalent to 109 per 100, or 109/100 as a fraction. By shading a complete 10x10 square and an additional 9 squares, we visually demonstrate 109% of a whole square. Created by Sal Khan and Monterey Institute for Technology and Education.
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- Am i the only one who has not been here for 9 years??(14 votes)
- So if the percent is greater than 100, the value is more than one?(5 votes)
- Was this not 109 out of 200 because you used 2 squares of 100(2 votes)
- I see you are confused, so it wouldn´t be 109/200 it would be 109/100. He used two squares because one square stood for 100% and the other stood for 9%.
Hope this helps. :)(5 votes)
- so basically you shade in a hundred (a whole) and the number of squares that are the number that makes it improper in the next square...(4 votes)
- How do you do 12 percent of 144 percent?(3 votes)
- what percent would it be if you combine both of the hundred blocks?(2 votes)
- Why do you need 2 grids if you have 109 percent?(4 votes)
- The first grid represents 100% and is made up of 100 squares. So, you have to shade in those 100 squares to represent 100%. However, to represent 109%, you need additional 9 squares. Therefore, we need a second grid. We shade in 9 squares in the second grid to get 109%.
The other way to look at it is this: First grid is 100/100 squares and the second grid is 9/100 squares. You can add 100/100 and 9/100 to get 109/100 squares.(2 votes)
- At1:27, he shades in 100% right? But did he...
if the grid is a coordinate plane, on (10,5)that square isn't shaded in. Not even a little speck. So wouldn't it be 99%. I'll leave you to think about that........(2 votes)
Show 109% by shading. So just as a bit of review, 109% if we were to write it out, would literally be 109 percent, which is the same thing as 109 per-- and I could write cent again, but that's getting old. Cent means 100, so it literally means 109 per hundred. If you had 100 per 100, you're dealing with the whole, but now we have more than a whole. We have 109 per 100. We can actually write this as a ratio, or as a fraction. This is the same thing as 109 per 100. It's the the same thing as 109/100. So let's shade that in. So we have a whole here, so we could consider this square a whole. In the last video, we counted. This is a 10 by 10 square. It is cut up into 100 pieces. So if we want 109 of those 100 pieces, what are we talking about? That means we're going to shade in all of the 100 right over here. Let me do that in a new color. So we'll shade in all of this. If you just shaded that in, that would be 100%. That would be 100/100, or 100 per 100, or 100%. I think you're getting the meaning of all of this. I don't just want you just memorize this stuff. This really just means 100 out of 100, or a whole. And you can see that this is the whole square. That's 100 out of 100 right there. The question is saying show us 109% by shading. We already did 100 per 100, but we need to do another 9, so let's shade in another 9. So now we have one, two, three, four, five, six, seven, eight, nine. So this piece right here, you could almost view that is-- well, that is! That is 9% of an entire square. This is 100% of an entire square. If you considered this whole thing plus this blue area right over here, you are talking about 109% of one whole square. Hopefully, that made sense.