Adding Fractions and LCM Concepts

The video tutorial explains how to add fractions using a three-step method. First, it finds the least common multiple (LCM) of the denominators. Then, it expresses both fractions with the LCM as the new denominator. Finally, it adds the fractions by summing the numerators, resulting in the final answer.

What is the first step in the method to add 3/4 and 1/6?

• Find the least common multiple

• Convert fractions to decimals

• Subtract the smaller fraction from the larger one

• Find the greatest common divisor

What are the denominators of the fractions 3/4 and 1/6?

• 1 and 3

• 6 and 4

• 4 and 6

• 3 and 1

What is the least common multiple of 4 and 6?

• 6

• 18

• 24

• 12

What is the first step in finding the LCM of two numbers?

• Subtract the numbers

• Divide the numbers

• List the multiples of each number

• Add the numbers

How do you determine the LCM from the lists of multiples?

• Choose the largest common multiple

• Choose the smallest common multiple

• Choose any common multiple

• Choose the first multiple of each number

What is the importance of the LCM in adding fractions?

• It helps in subtracting fractions

• It is used to find the greatest common divisor

• It provides a common denominator for addition

• It converts fractions to decimals

How do you express 3/4 as a fraction over 12?

• 6/12

• 9/12

• 3/12

• 12/12

What is the equivalent of 1/6 when expressed over 12?

• 6/12

• 2/12

• 3/12

• 1/12

Why do we need to find a common denominator when adding fractions?

• To convert fractions to decimals

• To ensure the fractions have the same base for addition

• To simplify the fractions

• To make the fractions larger

What is the third multiple of 4?

• 8

• 20

• 12

• 16