Online math exercises: Least common multiple (LCM)

6 grade

LCM (6,8)

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Answer GoodWrong

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What is the greatest common divisor of 54 and 24?

Thus the divisors of 54 are: 1 , 2 , 3 , 6 , 9 , 18 , 27 , 54.
Similarly, the divisors of 24 are: 1 , 2 , 3 , 4 , 6 , 8 , 12 , 24.
The numbers that these two lists share in common are the common divisors of 54 and 24:
1 , 2 , 3 , 6.
The greatest of these is 6. That is, the greatest common divisor of 54 and 24.
One writes: gcd ( 54 , 24 ) = 6.

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