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|dw:1442797970378:dw|

2*630

sorry

630

yes, so because 1260 = 2*630, we draw two branches like this
|dw:1442798244739:dw|

then we do the same with 630
630/2 equals ???

315

|dw:1442798355918:dw|

105 :0

wow!!

|dw:1442798443090:dw|

we keep going down the line until everything is broken up into prime numbers

what would the complete factor tree look like?

so 2 2 3 3 5 7?

circle the primes then multiply them all out
|dw:1442798698121:dw|

so why did you stop going down on the left?

|dw:1442798869349:dw|
and so on...

so that's why 1 is left out of the factor tree

1 is NOT a prime number

hmm. were can i go to learn about this a little more

i really want to learn this more because i new to this

and if you want, we can do another example

yes pleas.

I'm going to checkout the website to

ok pick any number you like that's relatively small, but big enough to factor

composite number prime factors, what are the difference?

so think of "composite" as "composed of other smaller things"
like composite wood

|dw:1442799855476:dw|

|dw:1442799888145:dw|

oh my god THANK YOU. so how is the circle numbers prime?

ohhh thank you, how did you know all of this? thank you @jim_thompson5910

Lots and lots of practice. You'll get better at it by practicing it as much as possible.

and you're welcome

i will. can i ask another question?

because i think i got the hang of it :)

@jim_thompson5910 i will. can i ask another question? i think i got the hang of it :)

go ahead

2 × 2 × 5 × 5 × 7 is correct. Nice job

What are the prime factors of 625?
A. 1, 5, 5, 5, 5
B. (5, 5, 25) My answer
C. 5, 5, 5, 5
D. 25, 25

yes!!! I'm going to continue practicing, to be like you :)

25 is NOT prime. Why? because it can be factored further
25 = 5*5

lol sorry i meant lol

What are the prime factors of 625?
A. 1, 5, 5, 5, 5
B. 5, 5, 25
C. (5, 5, 5, 5) My answer
D. 25, 25

the last one was an accident hahah sorry

yep because 625 = 5*5*5*5

there are 4 copies of 5 being multiplied, we can use this shortcut
\[\Large 625 = 5*5*5*5 = 5^4\]

oh my go was just doing something like that

What is the value of 7 to the fifth power?
A. 2,401
B. (16,807) My answer
C. 35
D. 78,125

yep 7^5 = 16807

and yes, 5.7 * 10^8 = 570,000,000
570,000,000 = 570 million

oh my god I'm so happy right now :D. Thank you for everything you where a really big help for me,

im loving math right now lol

I'm glad you're loving math now

yeah! so the last question was right too?

the 570,000,000 one? yes it was

oh man thank you :'). I'm about to submit my exam :D

@jim_thompson5910 i got a 100!! thank you thank thank you. and god bless you :)