Comparing Fractions and LCM Concepts

This video tutorial on the Gis channel teaches how to compare fractions to determine which is larger or if they are equal. The instructor explains two methods: comparing fractions with the same denominator using the 'alligator mouth' method and comparing fractions with different denominators using the least common multiple (LCM) method. Additionally, the video covers converting fractions to decimals for comparison. The tutorial encourages viewers to practice with exercises available on the instructor's website.

What is the first step in comparing fractions with the same denominator?

• Find the least common multiple

• Compare the denominators

• Convert them to decimals

• Compare the numerators

Tags

CCSS.3.NF.A.3D

If you have the fractions 5/7 and 3/7, which one is larger?

• 5/7

• 3/7

• Cannot be determined

• They are equal

Tags

CCSS.4.NF.A.2

What analogy is used to help remember which fraction is larger?

• The lion's roar

• The bear's paw

• The alligator's mouth

• The eagle's eye

Tags

CCSS.1.NBT.B.3

When using the alligator's mouth analogy, which way does the mouth open?

• Towards the smaller number

• Towards the larger number

• Towards the equal number

• It doesn't open

What is the least common multiple (LCM) used for in fraction comparison?

• To find the largest numerator

• To simplify fractions

• To make the denominators the same

• To convert fractions to decimals

What is the LCM of 5 and 8?

• 40

• 10

• 20

• 5

Tags

CCSS.7.NS.A.1C

How do you find the new numerator when using the LCM method?

• Subtract the old numerator from the LCM

• Add the old numerator to the LCM

• Multiply the old numerator by the factor used to get the LCM

• Divide the old numerator by the LCM

What is the decimal equivalent of the fraction 2/5?

• 0.2

• 0.4

• 0.5

• 0.6

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

Which method can be used to compare fractions by converting them to decimal numbers?

• Decimal conversion method

• Alligator's mouth method

• LCM method

• Numerator comparison method

What is the decimal equivalent of the fraction 9/5?

• 1.8

• 1.4

• 1.2

• 1.6