Question

32,56,80,154 LCM of the following by division method

Answer 1

Answer:

LCM = 12,320

Solution by Division Method

Divide your numbers by prime numbers as long as at least one of your numbers is evenly divisible by a prime number.

Division Table

2 32 56 80 154

2 16 28 40 77

2 8 14 20 77

2 4 7 10 77

2 2 7 5 77

5 1 7 5 77

7 1 7 1 77

11 1 1 1 11

1 1 1 1

Bring down any numbers that are not evenly divisible by the prime number.

When the last row of results is all 1's you are done.

Find the product of the prime numbers in the first column to get the LCM:

LCM = 2 x 2 x 2 x 2 x 2 x 5 x 7 x 11

LCM = 12,320

Therefore,

LCM(32, 56, 80, 154) = 12,320