Least Common Multiple practice

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two or more numbers is the smallest multiple that is exactly divisible by each of the numbers.

Front

How do you find the LCM of two numbers?

Back

To find the LCM of two numbers, list the multiples of each number and identify the smallest multiple that appears in both lists.

Front

What is the LCM of 4 and 10?

Back

20

Front

What is the LCM of 6 and 8?

Back

24

Front

What is the LCM of 30 and 40?

Back

120

Front

What is a multiple?

Back

A multiple of a number is the product of that number and any whole number.

Front

What is a common multiple?

Back

A common multiple is a number that is a multiple of two or more numbers.

Front

What is the difference between LCM and GCD (Greatest Common Divisor)?

Back

LCM is the smallest multiple common to two or more numbers, while GCD is the largest number that divides two or more numbers without leaving a remainder.

Front

If a school serves lunch every 5 days and breakfast every 10 days, when will both be served on the same day again?

Back

The LCM of 5 and 10 is 10 days.

Front

If two events occur every 12 days and 15 days, how often do they occur together?

Back

The LCM of 12 and 15 is 60 days.