|
A Least
Common
Multiple
(LCM)
is a whole number
that is the same product
of two or more numbers.
Remember:
A MULTIPLE of a number is a product of that number
Multiples of 5 = 5,
10, 15, 20, 25, 30...
(think of counting by the number)
Do
You Get It ?
|
|
The Least Common
Multiple of 6
and 8
Multiples of 6 = 6, 12, 18, 24,
30, 36, 42, 48...
Multiples of 8 = 8, 16, 24
Meaning:
24 is the first, and LEAST,
common multiple of 6 and 8
|
Are You
Still With Me ?
|
|
You can use LCM
to help solve problems
A U.S. Presidential election is held every 4
years.
A U.S. Senatorial election is every 6 years.
If both elections were this year, how many more years will it be until
they both have elections together again?
Multiples of 4 = 4,
8, 12
Multiples of 6 = 6, 12,
18, 24, 30...
LCM = 12
It would be another 12
years before there is a Presidential and US Senatorial election in
the same year.
|
Upon further review:
To
find the Least Common
Multiple
(LCM)
Multiply (or count by) each number.
Those are the 'multiples'.
The
LOWEST Matching (or Common)
Multiples are then known as your
LCM
!
|
