24-25 Pre-Alg I Flashcard #3 Practice

Front

What is prime factorization?

Back

Prime factorization is the process of expressing a number as the product of its prime factors.

Front

What is the prime factorization of 48?

Back

Front

What are common factors?

Back

Common factors are numbers that divide two or more numbers without leaving a remainder.

Front

What are the common factors of 16 and 24?

Back

The common factors of 16 and 24 are 1, 2, 4, and 8.

Front

How do you determine if a number is divisible by 9?

Back

A number is divisible by 9 if the sum of its digits is divisible by 9.

Front

Is 252 divisible by 9?

Back

Yes, because the sum of the digits (2 + 5 + 2 = 9) is divisible by 9.

Front

What is the rule for a number to be divisible by 6?

Back

A number is divisible by 6 if it is divisible by both 2 and 3.

Front

What digit makes 574__ divisible by 6?

Back

The digit 2 makes 5742 divisible by 6.

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

List the first five prime numbers.

Back

The first five prime numbers are 2, 3, 5, 7, and 11.