7.2 Prime and Composite Numbers

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.

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CCSS.4.OA.B.4

Front

What is a composite number?

Back

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

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CCSS.4.OA.B.4

Front

Is the number 2 prime or composite?

Back

The number 2 is prime.

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CCSS.4.OA.B.4

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

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CCSS.4.OA.B.4

Front

Can a prime number be even?

Back

Yes, the only even prime number is 2.

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CCSS.4.OA.B.4

Front

What is the sum of two prime numbers?

Back

The sum of two prime numbers can be even or odd, but the sum of two odd prime numbers is always even.

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CCSS.3.OA.D.9

Front

What are the factors of 8?

Back

The factors of 8 are 1, 2, 4, and 8.

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CCSS.4.OA.B.4

Front

What are the factors of 9?

Back

The factors of 9 are 1, 3, and 9.

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CCSS.4.OA.B.4

Front

If a number has exactly two factors, what type of number is it?

Back

It is a prime number.

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CCSS.4.OA.B.4

Front

What is an example of three prime numbers that add up to 12?

Back

3, 7, and 2 are three prime numbers that add up to 12.

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CCSS.6.EE.A.1