Factors, Multiples, Prime, Composite

Front

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder. For example, 3 is a factor of 12 because 12 ÷ 3 = 4.

Front

What is a multiple?

Back

A multiple is the result of multiplying a number by an integer. For example, the first four multiples of 5 are 5, 10, 15, and 20.

Front

What is a prime number?

Back

A prime number is a number greater than 1 that has no positive divisors other than 1 and itself. For example, 2, 3, 5, and 7 are prime numbers.

Front

What is a composite number?

Back

A composite number is a number greater than 1 that has more than two positive divisors. For example, 4, 6, and 8 are composite numbers.

Front

Which numbers are factors of 36?

Back

The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.

Front

Is 29 a prime or composite number?

Back

29 is a prime number because it has no divisors other than 1 and 29.

Front

Fill in the blank: 10, 20, 30, _____, 50, 60. What is the missing number?

Back

The missing number is 40.

Front

Which number is a factor of 18?

Back

The factors of 18 include 1, 2, 3, 6, 9, and 18. 6 is one of the factors.

Front

What are the first four multiples of 3?

Back

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

Front

Is 15 a prime or composite number?

Back

15 is a composite number because it has divisors 1, 3, 5, and 15.