Pre-Algebra
18 Online
OpenStudy (anonymous):
Find the LCM of 24 and 40. will medal
A.
24
B.
48
C.
96
D.
120
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OpenStudy (muzzack):
well do you know what is a LCM
OpenStudy (anonymous):
that the only thing that gives me a hard time
OpenStudy (muzzack):
Let's find the LCM of 30 and 45.
OpenStudy (muzzack):
ex. 1
OpenStudy (muzzack):
One way to find the least common multiple of two numbers is to first list the prime factors of each number.
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OpenStudy (muzzack):
so try it with 30 and 45
OpenStudy (anonymous):
ok well for 30
OpenStudy (anonymous):
2,15,10,30,5,6
OpenStudy (anonymous):
3,15,5,9
OpenStudy (muzzack):
now where do you see one number that is the smallest and simiolar
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OpenStudy (anonymous):
5 ?
OpenStudy (anonymous):
wait 3
OpenStudy (muzzack):
5 is your answer yes good job now try that with the 24 and 40
OpenStudy (anonymous):
cause the 30 i put before was ment to be a 3
OpenStudy (muzzack):
oh ok 3 then sorry thought it was 30 ok so it is 3
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OpenStudy (anonymous):
lol ok now i work with 24 and 40 right?
OpenStudy (muzzack):
yup
OpenStudy (muzzack):
oh i alsmost forgot. welcom to openstudy
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
ok so fore 24 its : 12 2 3 8 6 4
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OpenStudy (anonymous):
*for
OpenStudy (muzzack):
good
OpenStudy (anonymous):
and 40 :20 2 4 10 5 8
OpenStudy (muzzack):
no what do you think it is
OpenStudy (muzzack):
in the multiple choice
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OpenStudy (anonymous):
a ?
OpenStudy (muzzack):
it doesnt say 2, but try to find the smallest possible that match with the answer choices
OpenStudy (anonymous):
i say a
OpenStudy (muzzack):
yes tou are correct
OpenStudy (anonymous):
thank u gave u a medal :D
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OpenStudy (muzzack):
good job i hope i helped :)
OpenStudy (muzzack):
what grade are you hannah
OpenStudy (anonymous):
6
OpenStudy (muzzack):
6th must be cool for you, ima freshman
OpenStudy (anonymous):
coolz
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OpenStudy (muzzack):
well any help fan me and tag me :)
OpenStudy (anonymous):
ok