LCM and GCF of 24 and 30

The video tutorial explains how to find the least common multiple (LCM) and greatest common factor (GCF) of the numbers 24 and 30 using a factor tree and a chart. It begins with factoring each number into its prime components, organizing these factors in a chart, and then calculating the LCM by multiplying the highest power of each prime number present. The GCF is found by identifying common prime factors and multiplying them. The tutorial concludes with a summary of the results: the LCM is 120 and the GCF is 6.

What is the main topic discussed in the video?

• Learning about geometry

• Understanding calculus

• Solving quadratic equations

• Finding the LCM and GCF of 24 and 30

Which prime number is first identified when factoring 24?

• 5

• 2

• 7

• 3

What is the final prime factor obtained when factoring 24?

• 2

• 3

• 5

• 7

What is the first step in factoring the number 30?

• Divide by 3

• Divide by 7

• Divide by 5

• Divide by 2

Which prime numbers are identified when factoring 30?

• 3, 5, 7

• 1, 2, 3

• 2, 3, 5

• 2, 4, 6

What is the purpose of creating a chart in the video?

• To solve equations

• To organize prime factors

• To draw graphs

• To calculate percentages

How is the LCM calculated from the chart?

• By adding all numbers

• By dividing the largest number

• By multiplying all unique prime factors

• By subtracting the smallest number

Which prime factors are common in both 24 and 30?

• 3 and 5

• 2 and 5

• 2 and 3

• 3 and 7

What is the GCF of 24 and 30?

• 10

• 8

• 12

• 6

What is the LCM of 24 and 30?

• 120

• 90

• 60

• 150