Give an example of a composite number.

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, etc.

What is the smallest prime number?

The smallest prime number is 2.

What is the smallest composite number?

The smallest composite number is 4.

Can a prime number be even?

Yes, the only even prime number is 2.

Can a composite number be odd?

Yes, examples of odd composite numbers include 9, 15, and 21.

What is the difference between prime and composite numbers?

Prime numbers have exactly two distinct positive divisors (1 and itself), while composite numbers have more than two.

Is 1 a prime or composite number?

Neither; 1 is neither prime nor composite.

How can you determine if a number is prime?

To determine if a number is prime, check if it has any divisors other than 1 and itself.

Prime or Composite Flashcards

Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

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.

Tags

CCSS.4.OA.B.4

2.

FLASHCARD QUESTION

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that has more than two positive divisors.

Tags

CCSS.4.OA.B.4

3.

FLASHCARD QUESTION

Front

Is 27 a prime or composite number?

Back

Composite

Tags

CCSS.4.OA.B.4

4.

FLASHCARD QUESTION

Front

Is 53 a prime or composite number?

Back

Prime

Tags

CCSS.4.OA.B.4

5.

FLASHCARD QUESTION

Front

Is 49 a prime or composite number?

Back

Composite

Tags

CCSS.4.OA.B.4

6.

FLASHCARD QUESTION

Front

Is 91 a prime or composite number?

Back

Composite

Tags

CCSS.4.OA.B.4

7.

FLASHCARD QUESTION

Front

Give an example of a prime number.

Back

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, etc.

Tags

CCSS.4.OA.B.4

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