Prime Factorization Terms and Divisibility Rules 2, 5, 10

Front

What does it mean for a number to be evenly divisible by another number?

Back

A number is evenly divisible by another number when there is no remainder after division.

Front

Can the numbers 865, 900, and 905 be divided evenly by 5?

Back

Yes, all these numbers can be divided evenly by 5.

Front

Is 840 divisible by 10?

Back

Yes, because it ends in 0.

Front

What is the divisibility rule for 10?

Back

A number can be divided evenly by 10 if it ends in 0.

Front

Can the numbers 4, 126, 432, and 2,345 all be divided evenly by 2?

Back

No, only 4, 126, and 432 can be divided evenly by 2; 2,345 cannot.

Front

What is prime factorization?

Back

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

Front

What are prime numbers?

Back

Prime numbers are numbers greater than 1 that have no positive divisors other than 1 and themselves.

Front

List the first five prime numbers.

Back

2, 3, 5, 7, 11.

Front

What is the divisibility rule for 2?

Back

A number is divisible by 2 if it ends in 0, 2, 4, 6, or 8.

Front

What is the divisibility rule for 5?

Back

A number is divisible by 5 if it ends in 0 or 5.