Finding HCF Using Long Division

This video tutorial explains how to find the Highest Common Factor (HCF) using the long division method. It covers two examples: finding the HCF of two numbers and then three numbers. The tutorial demonstrates the step-by-step process of dividing the larger number by the smaller one, using the remainder as the new divisor, and continuing until a zero remainder is achieved. The video concludes with a call to action to like and subscribe for more math content.

What is the main topic of the video?

• Finding LCM using prime factorization

• Understanding fractions

• Finding HCF using the long division method

• Solving quadratic equations

When is the long division method preferred for finding HCF?

• When numbers are prime

• When dealing with small numbers

• When numbers are large

• When numbers are even

What is the first step in finding the HCF of two numbers using the long division method?

• Add the two numbers

• Divide the larger number by the smaller number

• Divide the smaller number by the larger number

• Multiply the two numbers

In the first example, what is the HCF of 136 and 170?

• 36

• 34

• 32

• 40

What is the first step in finding the HCF of three numbers using the long division method?

• Divide the smallest number by the largest number

• Multiply all three numbers

• Find the HCF of the first two numbers

• Add all three numbers

In the second example, what is the HCF of 30 and 75?

• 20

• 25

• 15

• 10

What is the next step after finding the HCF of the first two numbers in a set of three?

• Divide the third number by the HCF

• Multiply the HCF by the third number

• Add the HCF to the third number

• Check if the third number is divisible by the HCF

In the second example, is 60 divisible by the HCF of 30 and 75?

• Yes

• Only if 60 is odd

• No

• Only if 60 is even

What is the final HCF of the numbers 30, 60, and 75?

• 25

• 15

• 20

• 10

What should viewers do if they found the video helpful?

• Watch it again

• Like and subscribe to the channel

• Comment on the video

• Share it with friends