GCF and LCM

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

Find the GCF of 32 and 64.

Back

32

Front

What is a factor?

Back

A factor is a number that divides another number evenly, without leaving a remainder.

Front

Which of these is a factor of 10: 2, 4, or 20?

Back

2

Front

What is the Least Common Multiple (LCM)?

Back

The LCM is the smallest number that is a multiple of two or more numbers.

Front

Find the LCM of 4 and 5.

Back

20

Front

What is a prime number?

Back

A prime number is a number that is only divisible by 1 and itself.

Front

Is 9 a prime number?

Back

No, because it can be divided by 1, 3, and 9.

Front

What is the relationship between GCF and LCM?

Back

The product of the GCF and LCM of two numbers is equal to the product of the numbers.

Front

If Gabriella volunteers every 4th day and every 6th day, how do you find the next day she volunteers at both?

Back

Find the LCM of 4 and 6, which is 12. Add 12 days to the last volunteering date.