Understanding LCM and GCF

This video tutorial from MooMooMath and Science explains how to find the lowest common multiple (LCM) and greatest common factor (GCF) of the numbers 24 and 36. The instructor uses a factor tree and a chart to demonstrate the process, highlighting the importance of accuracy to avoid errors. The video provides step-by-step instructions for calculating both the LCM and GCF, concluding with a summary of the results: LCM is 72 and GCF is 12. The tutorial emphasizes careful calculation and concludes with a reminder to practice kindness.

What is the purpose of using a factor tree and chart in this video?

• To find the sum of two numbers

• To determine the LCM and GCF

• To calculate the average of numbers

• To solve algebraic equations

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Which numbers are used to create the factor tree in the video?

• 30 and 45

• 12 and 18

• 24 and 36

• 15 and 25

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What is the first step in creating a factor tree for the number 24?

• Divide by 4

• Divide by 5

• Divide by 3

• Divide by 2

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What should you be careful about when completing the factor tree?

• Adding instead of multiplying

• Skipping steps

• Factoring incorrectly

• Using the wrong numbers

How do you determine the LCM using the chart?

• Add all the numbers in the chart

• Multiply all the numbers in the chart

• Subtract the smallest number from the largest

• Multiply all prime numbers, bringing down one if two are in a column

What is the LCM of 24 and 36 as found in the video?

• 72

• 48

• 60

• 84

What is the final step in finding the LCM using the chart?

• Add all the numbers

• Multiply the numbers brought down

• Divide the numbers

• Subtract the numbers

What rule is used to find the GCF using the chart?

• Subtract the smallest number from the largest

• Add all numbers in the chart

• Only multiply numbers if two are in the same column

• Multiply all numbers in the chart

What is the GCF of 24 and 36 as determined in the video?

• 8

• 10

• 12

• 6

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What is the closing message of the video?

• Always check your work

• Math is fun

• Practice makes perfect

• Kindness multiplies kindness

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