LCM/GCF Practice

Front

What does GCF stand for?

Back

GCF stands for Greatest Common Factor, which is the largest number that divides two or more numbers without leaving a remainder.

Front

How do you find the GCF of two numbers?

Back

To find the GCF, you can use prime factorization to break down the numbers into their prime factors and then identify the common factors.

Front

What is the LCM of 12 and 10?

Back

The LCM of 12 and 10 is 60.

Front

Fill in the missing multiple: 7: 7, 14, 21, ___, 35, 42, 49

Back

The missing multiple is 28.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Front

Is 11 a prime or composite number?

Back

11 is a prime number.

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that is not prime, meaning it has more than two positive divisors.

Front

How do you find the LCM of two numbers?

Back

To find the LCM, you can list the multiples of each number and find the smallest common multiple.

Front

What is the prime factorization of 24?

Back

The prime factorization of 24 is 2 x 2 x 2 x 3 or 2^3 x 3.

Front

What is the prime factorization of 40?

Back

The prime factorization of 40 is 2 x 2 x 2 x 5 or 2^3 x 5.