Definition of LCM

LCM stands for least common multiple. In mathematics, LCM of two numbers 10 and 16, is defined as the smallest positive integer that is divisible by both. It is written as LCM(10, 16).

Properties of LCM

  • LCM follows associative property, that means LCM(10, 16) = LCM(16, 10).
  • LCM follows commutative property, which means LCM(a, b, c) = LCM(LCM(a, b), c) = LCM(a, LCM(b, c)).
  • LCM follows distributive property, which means LCM(ab, bc, ad) = d * LCM(x, y, z).
  • The LCM of two given numbers is never less than any of those numbers. Eg- LCM of 10 and 16 is 80, where 10 and 16 are less than 80.
  • The LCM of two or more prime numbers is their product.

Steps to find lcm of 10 and 16 by Listing Method

Example: Find lcm of 10 and 16 by Listing Method

  • Multiples of 10: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160
  • Multiples of 16: 16, 32, 48, 64, 80, 96, 112, 128, 144, 160

Hence, LCM of 10 and 16 is 80.

Steps to find LCM of 10 and 16 by Common Division Method

Example: Find lcm of 10 and 16 by Common Division Method

2 10 16
2 5 8
2 5 4
2 5 2
5 5 1
1 1

Hence, LCM of 10 and 16 is 2 x 2 x 2 x 2 x 5 = 80.

Steps to find lcm of 10 and 16 by Formula

Example: Find lcm of 10 and 16 by Formula

  • GCF of 10 and 16 = 2
  • LCM of 10 and 16 = (10 x 16) / 2
  • => 160 / 2

Hence, LCM of 10 and 16 is 80.

Examples

A shopkeeper sells candies in packet of 10 and chocolates in packet of 16. What is the least number of candies and chocolates Annie should buy so that there will be one candy for each chocolate?

The least number of candies and chocolates Annie should buy so that there will be one candy for each chocolate we need to find the lcm of 10 and 16.
So, LCM of 10 and 16 is 80.

Both the cricket team and the rugby team had games, today. The cricket team plays every 10 days and the basketball team plays every 16 days. When will both teams have games on the same day again?

Given that the cricket team plays every 10 days and the basketball team plays every 16 days, so for finding the next time when both teams will play again we need to find the LCM of 10 and 16.
So, LCM of 10 and 16 is 80.

Steve spends 10 dollars every day while George spends 16 dollars every day. What is the least number of days it will take each person to spend the same amount of money?

To find the least number of days that would be taken to be able to spend the same amount of dollars we need to find the LCM of 10 and 16.
So, LCM of 10 and 16 is 80.

Sammy's company prints 10 textbooks at a time. Daniel's company prints textbooks in sets of 16 at a time. According to a survey done by a committee, both companies printed the same number of textbooks last year. Find the least number of books that each company would have printed.

To find the least number of textbooks that each company could have printed we need to find the LCM of 10 and 16.
So, LCM of 10 and 16 is 80.

Ariel exercises every 10 days and Rubel every 16 days. They both excercised today. How many days will it be until they excercise together again?

The problem can be solved using LCM, because we are trying to figure out the least time until they excercise together again.
So, LCM of 10 and 16 is 80.

Find the least common multiple of 10 and 16.

Least common multiple of 10 and 16 is 80.

Find the least number which is exactly divisible by 10 and 16.

Least number which is exactly divisible by 10 and 16 is 80.