Divisibility Rules

Front

What is a divisibility rule?

Back

A rule that helps determine if one number can be divided by another without leaving a remainder.

Tags

CCSS.3.OA.D.9

Front

Which numbers are divisible by 2?

Back

Any even number, such as 2, 4, 6, 8, etc.

Tags

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.

Tags

CCSS.4.OA.B.4

Front

What is the divisibility rule for 5?

Back

A number is divisible by 5 if it ends in 0 or 5.

Tags

CCSS.3.OA.D.9

Front

What is the divisibility rule for 10?

Back

A number is divisible by 10 if it ends in 0.

Tags

CCSS.4.OA.B.4

Front

What is a prime number?

Back

A 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 number greater than 1 that has more than two positive divisors.

Tags

CCSS.4.OA.B.4

Front

Are the numbers 0 and 1 prime or composite?

Back

Neither prime nor composite.

Tags

CCSS.4.OA.B.4

Front

What is the smallest prime number?

Back

2.

Tags

CCSS.4.OA.B.4

Front

What is the largest two-digit prime number?

Back

97.

Tags

CCSS.4.OA.B.4