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# Basic subtraction | Addition and subtraction | Arithmetic | Khan Academy

Introduction to subtraction

Practice this lesson yourself on KhanAcademy.org right now:

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Arithmetic on Khan Academy: So you’re ready to have some arithmetic fun? You’ve come to the right spot! It’s the first “official” math topic and chalked full of fun exercises and great videos which help you start your journey towards math mastery. We’ll cover the big ones: addition, subtraction, multiplication, and division, of course. But we don’t stop there. We’ll get into negative numbers, absolute value, decimals, and fractions, too. Learning math should be fun, and we plan on having some with you. Ready to get started?

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### Hướng dẫn cách nâng cấp win 7 lên win 10 1909 không mất dữ liệu

1. i z y says:

why are you laging kean

Mnhubb

3. Jessica Comparato says:

Just kidding I love your vid can’t wait for your next one

4. Jessica Comparato says:

Erm vid is making me 🤢🤮

5. Hieu Moments says:

you have a cool channel

6. kalim pathan says:

Im software engineer and im watching this video.. wanted to clear some doubts.. :-D.. nicely explain..

7. Jalaluddin Kazi says:

Write the degree of the following polynomial. ab2cd – 3a2bcd3 +2ac4.

8. Megan Cericola says:

Three Rivers school

9. 2kshootingreens Bruh says:

crickets in background

10. The Bacon Gamer says:

11. The Bacon Gamer says:

zzzzzzzzzz,huh?

12. William Rezaee says:

my goodness these are like the first Khan Akedemy videos

13. Meiruki says:

Who the heck eats lemons for their meals

14. Ore Creeper says:

#perfectexplanation

15. Ore Creeper says:

Crainer fans u shouldn't be his fans anymore

16. Ore Creeper says:

The youtuber Crainer Commentates said SSundee is so good at trolling in CrundeeCraft he gave up

17. Ore Creeper says:

The lemons were a bad idea, I would never eat any plain

18. Combination Card Game, LLC says:

Thanks for the video! For another fun way to learn basic math, check out the exciting new card game, Combination!

19. Imani McBean says:

I love that Video. Also

20. Alexander Reschny says:

1 number

21. R Ree says:

He says we'll see that in A;egabra and I am wondering, ho wdo we see it in Algebra?

22. CQN APDN says:

Do you want us to explain what is algebra?

23. CQN APDN says:

24. R Ree says:

Can*

25. R Ree says:

Sorry, how does information at the end go into Algebra?

26. R Ree says:

Sorry, cab someone please explain to me the end from the 3 plus 1 part.

27. Billy Tea says:

This shit is so hard to understand!!

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