Question

how to dolve hcf and lcm sums in vertical method ?​

Answer 1

Answer:

The following steps will be useful to find HCF and LCM of two or more numbers using ladder method. .

Step 1 :

• Put the given numbers inside the L shape

Step 2 :

• We have to split the given number by prime numbers only. That is, always we have to put prime numbers out side the L shape.

Step 3 :

Given below will be helpful to find the prime number which exactly divides the given number.

• A number which ends with 0, 2, 4, 6 and 8 is divisible by the smallest prime number 2.
• A number which ends with 0 or 5 is divisible by 5
• If the sum of digits of the given number is a multiple of 3, then the given number is divisible by 3.

Step 4 :

• Repeat this process until get prime numbers inside the ladder.

Step 5 :

• The product of numbers out side the ladder will be the HCF

Step 6 :

• The product of numbers inside and out side the ladder will be the LCM