Prime Vs. Composite

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

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

Front

List the first four prime numbers.

Back

2, 3, 5, 7

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CCSS.4.OA.B.4

Front

Is 1 a prime number?

Back

No, 1 is not a prime number.

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CCSS.4.OA.B.4

Front

Is 2 a prime number?

Back

Yes, 2 is the only even prime number.

Tags

CCSS.4.OA.B.4

Front

What is the divisibility rule for 2?

Back

A number is divisible by 2 if its last digit is even (0, 2, 4, 6, or 8).

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CCSS.3.OA.D.9

Front

What is the divisibility rule for 3?

Back

A number is divisible by 3 if the sum of its digits is divisible by 3.

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CCSS.4.OA.B.4

Front

What is the divisibility rule for 5?

Back

A number is divisible by 5 if its last digit is 0 or 5.

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CCSS.2.OA.C.3

Front

Which of the following is a composite number: 6, 7, 11?

Back

6 is a composite number.

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CCSS.4.OA.B.4

Front

True or False: A prime number has only two factors.

Back

True.

Tags

CCSS.4.OA.B.4