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GCF or LCM?

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by

Christina Reed

on 16 October 2013

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Transcript of GCF or LCM?

GCF or LCM?
How do you decide which strategy to use to solve a word problem?
First read the problem, and watch for keywords.
Look for The Key Words
GCF Keywords
arrangement
break
greatest
most
biggest
divide into
group into
equal
amounts
LCM Keywords
least
smallest
time
equal amounts
groups of
buy
every ... every...together again
If a Problem ask you to ...
arrange something into rows or groups
Find The GCF
Find How many people to invite.
split something into smaller parts
Find The LCM
find an event that repeats over and over
find something that happens at the same time
buy or get a multiple of things
Full transcript