Comparing and Finding LCM of Fractions

The video tutorial explains how to compare unlike fractions using the Least Common Multiple (LCM) method. It provides two examples: comparing 5/8 with 7/12 and 5/7 with 9/11. The process involves finding the LCM of the denominators, adjusting the fractions to have the same denominator, and then comparing the numerators. The tutorial emphasizes understanding the LCM calculation and applying it to make denominators equal for direct comparison.

What is the term used for fractions with different numerators and denominators?

• Like fractions

• Improper fractions

• Unlike fractions

• Equivalent fractions

Which method is used to compare unlike fractions?

• Addition method

• Subtraction method

• LCM method

• Cross-multiplication

In the chocolate example, how many pieces did the narrator eat?

• 8

• 5

• 3

• 7

What is the first step in comparing fractions using the LCM method?

• Find the LCM of the numerators

• Find the LCM of the denominators

• Add the fractions

• Subtract the fractions

What is the LCM of 8 and 12?

• 16

• 20

• 28

• 24

After finding the LCM, what should be done next?

• Multiply the fractions

• Subtract the fractions

• Make the denominators equal to the LCM

• Add the fractions

In the example, which fraction was greater: 5/8 or 7/12?

• 5/8

• 7/12

• Cannot be determined

• They are equal

What are the denominators in the new example?

• 6 and 10

• 8 and 12

• 7 and 11

• 5 and 9

Why are 7 and 11 considered prime numbers?

• They are only divisible by 1 and themselves

• They are divisible by 2

• They are even

• They are greater than 10

What is the LCM of 7 and 11?

• 49

• 77

• 88

• 99