Factors and divisibility

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number.

Front

What are the factors of 12?

Back

1, 2, 3, 4, 6, 12

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.

Front

What is the smallest prime number?

Back

2

Front

What is the greatest common factor (GCF)?

Back

The GCF is the largest number that divides two or more numbers without leaving a remainder.

Front

What is the GCF of 6 and 21?

Back

3

Front

Which of the following numbers has 3 as a factor? 9, 11, 21, 9 and 21?

Back

9 and 21

Front

Which of the following numbers is not a prime number? 11, 17, 15, 13?

Back

15

Front

What is divisibility?

Back

Divisibility is the ability of one number to be divided by another without leaving a remainder.

Front

What does it mean if a number is divisible by 2?

Back

It means the number is even.