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.

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CCSS.4.OA.B.4

Front

Is the number 1 prime, composite, or neither?

Back

Neither. The number 1 has only one factor: itself.

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 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

What is the divisibility rule for 10?

Back

A number is divisible by 10 if its last digit is 0.

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CCSS.3.OA.D.9

Front

Give an example of a prime number.

Back

2, 3, 5, 7, 11 are examples of prime numbers.

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CCSS.4.OA.B.4

Front

Give an example of a composite number.

Back

4, 6, 8, 9, 10 are examples of composite numbers.

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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

What is the smallest composite number?

Back

The smallest composite number is 4.

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CCSS.4.OA.B.4