Prime and Composite Numbers: Lesson 2

Front

A number that has only two factors, 1 and itself, is called a _______ number.

Back

prime

Front

A number that has more than 2 factors is called a __________ number.

Back

composite

Front

Composite numbers:

Back

Have more than 2 factors

Front

What are all prime numbers divisible by?

Back

1 and itself

Front

Who made an error and included a composite number? Options: Eric: 5, 7, 17, 23; Maya: 3, 5, 13, 17; Bella: 2, 3, 17, 19; Joan: 7, 11, 13, 21

Back

Joan

Front

Which of the following is NOT true about prime numbers? Options: They have exactly two factors, 1 is a factor of every prime number, No prime numbers end in zero, All prime numbers are odd numbers.

Back

All prime numbers are odd numbers.

Front

Which list is only composite numbers? Options: 1, 3, 4, 2, 4, 6, 4, 6, 8, 5, 6, 8

Back

4, 6, 8

Front

Which number is NOT prime? Options: 3, 7, 17, 21

Back

21

Front

Which number is prime? Options: 9, 5, 15, 1

Back

5

Front

Which of these is a prime number? Options: 33, 34, 35, 37

Back

37