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1. Go to Khan Academy.
2. Log in.
3. Watch the videos with these names in order to get credit for the assignment.

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1. Choose a problem from the set attached below that no other classmate has chosen. (scroll down)
2. In your response, first record the question number and the original problem.
3. Record your answer.
4. Answer the question, "How do I know my answer is correct".
5. Respond to 2 classmates. Give feedback.  Do you agree? Disagree? Offer suggestions. Ask a question.

1. Elija un problema del conjunto adjunto a continuación que ningún otro compañero de clase haya elegido.
2. En su respuesta, primero registre el número de la pregunta y el problema original.
3. Grabe su respuesta.
4. Responda la pregunta "Cómo sé que mi respuesta es correcta".
5. Responda a 2 compañeros de clase. Dar opinion. ¿Estás de acuerdo? ¿Discrepar? Ofrecer sugerencias. Hacer una pregunta.

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- [Voiceover] What I want to do in this video is think about what it means to have an opposite of a number. Let me draw a number line here. Let's draw a number line. And let's put some numbers on this number line. We can start at zero, and if we go to the right we have positive numbers. One, two, three, four, five. As we go to the left we get more and more negative. So negative one, negative two, negative three, negative four, and I can keep going on and on and on. Let's pick one of these numbers. Let's say that we pick the number three. What is going to be the opposite of the number three? Well the opposite of the number is a number that's the same distance from zero but on the other side. So three is three to the right of zero. One, two, three. So its opposite is going to be three to the left of zero. One, two, three. So the opposite of three is negative three. Let me make a little table here. If we have the number, the number. And then we have its opposite. We have its opposite. So we just figured out that if you have the number three, its opposite is going to be negative three. Now what if your number is negative? What if your number, let's say the number negative four. What's the opposite of that? And I encourage you to pause the video and try to think about it on your own. Well, you say, okay, negative four is right over here. That's negative four. It is four to the left of zero. One, two, three, four to the left of zero. So its opposite is going to be four to the right of it. So one, two, three, four. It's going to be positive. It's going to be positive four. So you're probably starting to see a pattern here. The opposite of a number is going to be the opposite sign of that number. If you have a positive three here, its opposite is going to be negative three. If you start with negative four, its opposite is going to be positive four. One way to think about it, it's going to have the same absolute value but have a different sign. Or another way to think about it is, however if this is three to the right of zero, its opposite is going to be three to the left of zero. Or if the number is four to the left of zero, its opposite is going to be four to the right of zero. So we'll do one last one. What is the opposite of... What's going to be the opposite of one? Well one is one to the right of zero, so its opposite is going to be one to the left of zero, or negative one. Or another way to think about it, one is positive so its opposite is where you're going to change the sign. Instead of being positive it's going to be negative. It's going to be negative one. Either way that you can think about it.

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Number opposites (video) | Negative numbers | Khan Academy

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Voiceover] What I want to do in this video is think about what it means to have an opposite of a number. Let me draw a number line here. Let's draw a number line. And let's put some numbers on this number line.

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Click on the link to get a definition of the vocabulary word.

Haga clic en el enlace para obtener una definición de la palabra del vocabulario. En la parte superior derecha, haga clic en la palabra Inglés para cambiar el idioma a español.

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Go to khanacademy.org and complete the questions there from both practices.

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Go to khanacademy.org and complete the questions there from both practices.

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The practices are called:
1. Number Opposites
2. Negative Symbol as Opposite

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Have a question about the assignment?  Need a little help?

Post your question here. Let your classmates respond and help you out.

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Go to Khan Academy and complete the "Number Sentences" Assignment.
It should look like what is linked below.
Make sure to reach the assignment through Khan and not here so that you get credit for the assignment.

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Number opposites (article) | Khan Academy

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Learn what it means for a number to be the opposite of another number.

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- [Voiceover] In another video we've already talked about what an opposite of a number is, but we'll review it a little bit. If we start with a positive number, say, the number four. If you have a number and then we want to think about what the opposite of that number is. Opposite. This is just the symbol for number or shorthand for number. So if the number is four, what is its opposite? Well, four is one, two, three, four to the right of zero. Positive four is four to the right of zero. So its opposite is going to be one, two, three, four to the left. So it's going to be negative four. Or another way to think about it, if you have a positive number, its opposite is going to be the negative of that number. So another way of thinking about it is, is that this negative literally means opposite. One way to think about it, this is the number that is the opposite of four. So let me write this down. So if I write negative four. Negative, let me write this, negative four. That literally means... So you can take this negative symbol as meaning opposite. Opposite. Opposite of four. Opposite of four. If you were to say negative, instead of saying a specific number let's just say a letter that could represent a number. So if I said negative A, that means the opposite of the number A. That means the opposite... Opposite of... Let me do that in blue color. Opposite of A. Of A. And if this confuses you a little bit just look, A could be any number right over here. So let me draw a number line just so this can be a little bit, make a little bit more sense hopefully. So this is a number line. Let me put some tick marks here. I don't know much each of these tick marks jump but let's say that A is some number that is right over here. Well negative A is going to be the opposite of A. So if A is three tick marks to the right negative A is going to be three tick marks to the left. One, two, three. And so the opposite of A is going to be this value right over here. And we can write that, we can write opposite of A over here. We could literally write opposite, opposite of A is that number right over there. Or as a shorthand, we can just write-- We can just write negative. We can just write this is negative A right over here. Negative A. So with that in mind, if we literally view this negative symbol as meaning the opposite of whatever this is, let's try something interesting. What would be the negative-- Let me do this in another color. What would be the negative of negative three? And I encourage you to pause the video and think about it. Well we just said, this negative means the opposite. So you can think about this as meaning this means the opposite... Opposite of negative-- The opposite of negative three. So what is the opposite of negative three? Well negative three is three to the left of zero. One, two, three. So it's opposite is going to be three to the right of zero. One, two, three. So it's going to be positive three. So this is equal to positive three. Or we could just write positive three like that. So hopefully this gives you a better appreciation for what opposite means and also how it relates to the actual negative symbol. We could keep going. We could do something like what is the negative of the negative of negative-- Let me do a different number. Of negative two. Well, this part right over here the negative, the opposite of negative two, which is really the opposite of the opposite of two, well that's just going to be two. Every time you say opposite you flip over the number line. So this flips you over the number line two to the left and this flips you back two to the right so all of this is going to be two but then you're going to take the opposite of two so that's just going to be negative two. If you threw another negative in front of this, it would be the opposite of all of this. So it would be the opposite of negative two and then all of a sudden it would become positive. So every time you put that negative in front there you're flipping on the other side of the number line.

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Negative symbol as opposite (video) | Khan Academy

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Voiceover] In another video we've already talked about what an opposite of a number is, but we'll review it a little bit. If we start with a positive number, say, the number four. If you have a number and then we want to think about what the opposite of that number is.

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https://media.pk12ls.com/curriculum/math/cmp3/glossary/A82370/player.html?termIds=46

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https://media.pk12ls.com/curriculum/math/cmp3/glossary/A82370/player.html?termIds=50

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https://media.pk12ls.com/curriculum/math/cmp3/glossary/A82370/player.html?termIds=53

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https://media.pk12ls.com/curriculum/math/cmp3/glossary/A82370/player.html?termIds=52

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Go to khanacademy.org and complete the review for Number Opposites.

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Go to khanacademy.org and complete the review for Number Opposites.

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Make sure to reach the assignment through Khan and not here so that you get credit for the assignment.

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Number opposites review (article) | Khan Academy

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Review the opposites of numbers, and try some practice problems.

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The opposite number of 41 is negative 41.

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the opposite number is negative 28

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You find the opposite of a number or a negative number by creating a mirror number line because of you create a mirror number line and you you are trying to find out the opposite of 30 you would have to look on the opposite side of the positive numbers and you are negative 30 that will be your answer to your problem because it is on the opposite side of the positive numbers

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The opposite of -(-27) is 27.
I know that my answer is correct because of you look on a number line you will see that the opposite of of 27 is -27. However, since this is -(-27) we need to find the opposite twice so we find the opposite of -27 to get 27.

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the answer will be 13 i am correct because if you draw the number line -13 will be in the opposite side so it will be 13.

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The opposite of -20 is 20 because if you draw a mirror number line with -20 on the left hand side and 20 on the right hand side that means their on opposite sides that means that -20 is the opposite of 20

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To find opposites in number line is to the number on the right is the same u do in the left side so if u go one on the right side u do the one on the other side which is how u find opposites

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the opposite number of 44 is -44 and i know this because -44 is 44 spaces left of the 0 so that mean i have to go 44 spaces right  to the 0

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the opposite number of 44 is -44 and i know this because -44 is 44 spaces left of the 0 so that mean i have to go 44 spaces right  to the 0