Do you have to add only numbers? Or can you add real bananas too?

You can add anything. Bananas can each represent a number.

you can use your fingers

Yes, you can use anything as long as what you are using has the proper increments in the numerical increment where you are calculating the quantity of the equation.

If 3 + 7 = 10 then what is the missing number in 235 + ___ = 1,000?

You can reverse the equation into 1000-235=? And the answer is 765. I hope you didn’t get this question from your HW.

why do we have to watch these videos if we alredy know it?

Because It is good for you to refresh your memory on the topic.

what is 7 to the 2nd power plus three divided by 6 times 2

1.44444444444444444444444444444444444444444444444444444... etc.

You can also subtract 10 from 3 to get the answer

If you take 10 from 3 you get -7 because if you want a positive # (number without the minus sign in front of it) you have to take 3 away from 10 that is how you get 7

Hey there. Grab some objects (pencils, for example). Count out 5 of them, and put them in a pile. Then count out 10, and put them in another pile. Then put the two piles together and count the amount of pencils in the combined pile. You should get 15.

Main content

Arithmetic (all content)

Course: Arithmetic (all content) > Unit 2

Lesson 2: Making 10

Adding to 10

Name: Adding to 10
Uploaded: 2014-05-08T23:50:09Z
Description: Sal finds out how many bananas we need to add to 3 bananas to make 10 bananas.

Google Classroom

Sal finds out how many bananas we need to add to 3 bananas to make 10 bananas. Created by Sal Khan.

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Mati
Posted 5 years ago. Direct link to Mati's post “Do you have to add only n...”
Do you have to add only numbers? Or can you add real bananas too?
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(26 votes)
Answer
- khanacademy271
  Posted 3 years ago. Direct link to khanacademy271's post “You can add anything. Ban...”
  You can add anything. Bananas can each represent a number.
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  (9 votes)
ᵀʰᵒᵐᵃˢ
Posted 6 years ago. Direct link to ᵀʰᵒᵐᵃˢ's post “If 3 + 7 = 10 then what i...”
If 3 + 7 = 10 then what is the missing number in 235 + ___ = 1,000?
Button navigates to signup pageComment on ᵀʰᵒᵐᵃˢ's post “If 3 + 7 = 10 then what i...”
(11 votes)
Answer
- Sedat Kezel
  Posted 6 years ago. Direct link to Sedat Kezel's post “You can reverse the equat...”
  You can reverse the equation into 1000-235=?
  And the answer is 765.
  I hope you didn’t get this question from your HW.
  Button navigates to signup page
  (8 votes)
7jillst
Posted 4 years ago. Direct link to 7jillst's post “you can use your fingers”
you can use your fingers
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(12 votes)
Answer
- HumanCalc7
  Posted 3 years ago. Direct link to HumanCalc7's post “Yes, you can use anything...”
  Yes, you can use anything as long as what you are using has the proper increments in the numerical increment where you are calculating the quantity of the equation.
  Button navigates to signup page
  (3 votes)
abigail388358
Posted 2 years ago. Direct link to abigail388358's post “i like math so much becus...”
i like math so much becusea it fun to to do and you can yous your fingers or number line
Button navigates to signup pageComment on abigail388358's post “i like math so much becus...”
(9 votes)
Answer
- KFC
  Posted 3 months ago. Direct link to KFC's post “you like math”
  you like math
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  (3 votes)
afuaboatemaa123
Posted 7 years ago. Direct link to afuaboatemaa123's post “why do we have to watch t...”
why do we have to watch these videos if we alredy know it?
Button navigates to signup pageComment on afuaboatemaa123's post “why do we have to watch t...”
(3 votes)
Answer
- craterpain
  Posted 7 years ago. Direct link to craterpain's post “Because It is good for yo...”
  Because It is good for you to refresh your memory on the topic.
  Button navigates to signup page
  (4 votes)
Gunnar H.
Posted 7 years ago. Direct link to Gunnar H.'s post “what is 7 to the 2nd powe...”
what is 7 to the 2nd power plus three divided by 6 times 2
Button navigates to signup pageComment on Gunnar H.'s post “what is 7 to the 2nd powe...”
(3 votes)
Answer
- MaKenzie B
  Posted 7 years ago. Direct link to MaKenzie B's post “1.44444444444444444444444...”
  1.44444444444444444444444444444444444444444444444444444... etc.
  Button navigates to signup page
  (3 votes)
Eternity
Posted 3 years ago. Direct link to Eternity's post “why do y'all need to show...”
why do y'all need to show the video
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(3 votes)
Answer
Ashley Ambuehl
Posted 7 years ago. Direct link to Ashley Ambuehl's post “You can also subtract 10 ...”
You can also subtract 10 from 3 to get the answer
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(2 votes)
Answer
- Kimberly.
  Posted 7 years ago. Direct link to Kimberly.'s post “If you take 10 from 3 you...”
  If you take 10 from 3 you get -7 because if you want a positive # (number without the minus sign in front of it) you have to take 3 away from 10 that is how you get 7
  Button navigates to signup page
  (5 votes)
Whittney Wright
Posted 4 years ago. Direct link to Whittney Wright's post “how i add 5 to 10”
how i add 5 to 10
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(2 votes)
Answer
- Hurrah123456
  Posted 4 years ago. Direct link to Hurrah123456's post “Hey there. Grab some ob...”
  Hey there.
  
  Grab some objects (pencils, for example). Count out 5 of them, and put them in a pile. Then count out 10, and put them in another pile. Then put the two piles together and count the amount of pencils in the combined pile. You should get 15.
  Button navigates to signup page
  (4 votes)
Gordon Chen
Posted 7 years ago. Direct link to Gordon Chen's post “Can you turn around facts...”
Can you turn around facts like 3+4=7; 4+3=7?
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(2 votes)
Answer
- Liam Hepner
  Posted 5 years ago. Direct link to Liam Hepner's post “Yes! You sure can, if you...”
  Yes! You sure can, if you have the same numbers it would turn out to be the same answer.
  Button navigates to signup page
  (1 vote)

Video transcript

- [Voiceover] We've got three bananas here. One, two, three. So I'm starting with three bananas and I want to add some number of bananas so that I end up with 10 bananas. So this is what I'm starting with. I'm starting with three and I want to end up with 10. One, two, three, four, five, six, seven, eight, nine, ten. So what do I have to add to the three to get to 10? I encourage you to pause this video and try this out on your own. So let's work through this. So let's just start adding bananas. So that's three. So now let me add a fourth. That would be my fourth banana. Five bananas. Six bananas. Seven bananas. Eight bananas. Nine bananas. And ten bananas. So how many bananas did I add? So now I added some number of bananas here. So in total I have one, two, three, four, five, six, seven, eight, nine, ten. So how many did I have to add to the three in order to get to the total of 10 in order to get this 10 right over here? We could just count these. This is one, this is two, this is three, four, five, six, seven. I added seven bananas. I added seven bananas to the original three bananas to get to 10. So three plus seven is equal to 10. And you can see that what we have on this left side is indeed equal to what we have on the right side. On the left side we have one, two, three, four, five, six, seven, eight, nine, ten bananas and on the right hand side we have one, two, three, four, five, six, seven, eight, nine, ten. So they are indeed equal.