Factors and Multiples

Front

What is a prime number?

Back

A prime number is a number that has exactly two distinct positive factors: 1 and itself.

Front

What is a composite number?

Back

A composite number is a number that has more than two positive factors.

Front

What are factor pairs?

Back

Factor pairs are two numbers that, when multiplied together, give a product.

Front

What is the factor pair of 45?

Back

The factor pairs of 45 are (1, 45) and (5, 9).

Front

Which number is prime: 13, 8, 21, 35?

Back

13 is a prime number.

Front

Which number is composite: 3, 5, 11, 12?

Back

12 is a composite number.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What is the largest single-digit prime number?

Back

The largest single-digit prime number is 7.

Front

What is a multiple?

Back

A multiple of a number is the product of that number and an integer.

Front

List the first five multiples of 3.

Back

The first five multiples of 3 are 3, 6, 9, 12, and 15.