Recognizing prime and composite numbers | Factors and multiples | Pre-Algebra | Khan Academy

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Can you recognize the prime numbers in this group of numbers? Which are prime, composite, or neither?
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Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!
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I love it helped my 9 year old better understand I’d rate you for every school and recommend you!!!!!

[@SwayZ2024]

Thank you so much Khan I was confused in how to know when a number was prime or composite even if my teacher tought me but she Saud a prime number has two factors but I was still confused but now I understand tysm!😀

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im 23 and i never understood this now i do thank you

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Hahaha Same age, I'm 23.

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23 is a prime number.

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_VERY_ clearly explained

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i need more examples on composite number. basically the difference between prime number and composite number.

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Prime only has 2 factors and composite has more than 2 factors

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You could argue it's neither, it's composite 0/x is 0 but it cannot be divided by itself so a different kind of neither to 1.

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You can get the same as the same as the same as the same as the same as last year we had a chance to see if it is not

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can negative numbers be prime or composite? is -8 a composite number?? is -3 a prime number?

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{ so smart}

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I am your student but I still need help with prime numbers

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how.. are you so smart?

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Are you saying that there is only one neither number which Is 1

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2 is a prime number

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Thanks you help me amor and itsnnot boring

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Alot srry

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17 is a prime number

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The 204 dislikes are from people who don't like learning, cuz this makes it very simple to learn.

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cool

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You're welcome

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This video has a caption of over 30 languages. SiCK!

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is 325 prime or composite?

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4th grade

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My teacher had to put this link on the assignment 👁️👄👁️

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I’m held at gun point

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Omg thanks we barely covered prime and composite

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One is neither

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is this for grade 4

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24 is a composite number

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Fact

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-._.-

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you forgot 6 in 24

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What grade is this for?

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Its fith

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stupid

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Thank you again.

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