What is the LCM of 28 and 126 - Find out answer step by step

What does LCM mean in mathematics?

The least common multiple or LCM of two numbers 28 and 126 is defined as the smallest positive integer which is divisible by both of them. It is represented by LCM(28, 126).

Properties of LCM

The LCM of two given numbers is never less than any of those numbers. Eg- LCM of 28 and 126 is 252, where 28 and 126 are less than 252.
LCM is associative which means LCM(28, 126) = LCM(126, 28).
LCM is commutative which means LCM(a, b, c) = LCM(LCM(a, b), c) = LCM(a, LCM(b, c)).
LCM is distributive, which means LCM(ab, bc, ad) = d * LCM(x, y, z).
The LCM of two or more prime numbers is their product.

Steps to find lcm of 28 and 126 by Listing Method

Find some first multiples of 28 and 126.
Find the least common multiple, and read off the answer!

Example: Find lcm of 28 and 126 by Listing Method

Multiples of 28: 28, 56, 84, 112, 140, 168, 196, 224, 252, 280, 308, 336, 364, 392, 420, 448, 476, 504, 532, 560, 588, 616, 644, 672, 700, 728, 756, 784, 812, 840, 868, 896, 924, 952, 980, 1008, 1036, 1064, 1092, 1120, 1148, 1176, 1204, 1232, 1260, 1288, 1316, 1344, 1372, 1400, 1428, 1456, 1484, 1512, 1540, 1568, 1596, 1624, 1652, 1680, 1708, 1736, 1764, 1792, 1820, 1848, 1876, 1904, 1932, 1960, 1988, 2016, 2044, 2072, 2100, 2128, 2156, 2184, 2212, 2240, 2268, 2296, 2324, 2352, 2380, 2408, 2436, 2464, 2492, 2520, 2548, 2576, 2604, 2632, 2660, 2688, 2716, 2744, 2772, 2800, 2828, 2856, 2884, 2912, 2940, 2968, 2996, 3024, 3052, 3080, 3108, 3136, 3164, 3192, 3220, 3248, 3276, 3304, 3332, 3360, 3388, 3416, 3444, 3472, 3500, 3528
Multiples of 126: 126, 252, 378, 504, 630, 756, 882, 1008, 1134, 1260, 1386, 1512, 1638, 1764, 1890, 2016, 2142, 2268, 2394, 2520, 2646, 2772, 2898, 3024, 3150, 3276, 3402, 3528

Hence, LCM of 28 and 126 is 252.

Steps to find LCM of 28 and 126 by Common Division Method

Find all the prime numbers that would divide 28 and 126 without leaving any remainder.
Multiply the numbers obtained in step 1, and read off the answer!

Example: Find lcm of 28 and 126 by Common Division Method

2	28 126
2	14 63
3	7 63
3	7 21
7	7 7
	1 1

Hence, LCM of 28 and 126 is 2 x 2 x 3 x 3 x 7 = 252.

Steps to find lcm of 28 and 126 by Formula

The formula for LCM is LCM (28, 126) = (28 x 126) / GCF (28, 126)
Apply the formula, and read off the answer!

Example: Find lcm of 28 and 126 by Formula

GCF of 28 and 126 = 14
LCM of 28 and 126 = (28 x 126) / 14
=> 3528 / 14

Hence, LCM of 28 and 126 is 252.

Examples

Ram and Deepika are running on a circular track. They start at the same time. They take 28 and 126 minutes respectively to go round once. Find at what time they will run together?

Ram and Deepika are running on a circular track. They take 28 and 126 minutes respectively to go round once. We need to find out at what time (minimum) they will run together again. For this we need to find the LCM of 28 and 126.
So, LCM of 28 and 126 is 252.

A shopkeeper sells candies in packet of 28 and chocolates in packet of 126. 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 28 and 126.
So, LCM of 28 and 126 is 252.

What is the relation between LCM and GCF( Greatest Common Factor)?

Greatest common factors or gcf of 28 and 126 is GCF(28, 126) * LCM(28, 126) = (28 x 126) / GCF(28, 126) = 252.

Sammy's company prints 28 textbooks at a time. Daniel's company prints textbooks in sets of 126 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 28 and 126.
So, LCM of 28 and 126 is 252.

Mary exercises every 28 days and Nikki every 126 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 28 and 126 is 252.

Find the least common multiple of 28 and 126.

Least common multiple of 28 and 126 is 252.

Find the least number which is exactly divisible by 28 and 126.

Least number which is exactly divisible by 28 and 126 is 252.

What is LCM of 28 and 126?

How to find lcm of two numbers

What does LCM mean in mathematics?

Properties of LCM

Steps to find lcm of 28 and 126 by Listing Method

Example: Find lcm of 28 and 126 by Listing Method

Steps to find LCM of 28 and 126 by Common Division Method

Example: Find lcm of 28 and 126 by Common Division Method

Steps to find lcm of 28 and 126 by Formula

Example: Find lcm of 28 and 126 by Formula

Examples

What is LCM of 28 and 126?

How to find lcm of two numbers

What does LCM mean in mathematics?

Properties of LCM

Steps to find lcm of 28 and 126 by Listing Method

Example: Find lcm of 28 and 126 by Listing Method

Steps to find LCM of 28 and 126 by Common Division Method

Example: Find lcm of 28 and 126 by Common Division Method

Steps to find lcm of 28 and 126 by Formula

Example: Find lcm of 28 and 126 by Formula

Examples

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