This video tutorial explains how to evaluate an expression involving addition and subtraction of fractions. It covers finding the least common denominator by calculating the least common multiple of the denominators, converting fractions to have a common denominator, performing subtraction and addition, and simplifying the final result.

What is the priority of operations when dealing with addition and subtraction?

• Addition before subtraction

• Subtraction before addition

• Right to left, regardless of operation

• Left to right, regardless of operation

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

Why is it necessary to find a common denominator when adding or subtracting fractions?

• To make the fractions larger

• To ensure the fractions have the same base for accurate calculation

• To simplify the fractions

• To convert fractions to whole numbers

What is the least common denominator (LCD) of the fractions with denominators 5, 4, and 3?

• 12

• 20

• 120

• 60

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CCSS.3.NF.A.3B

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How do you convert the fraction 2/5 to have a denominator of 60?

• Multiply both numerator and denominator by 20

• Multiply both numerator and denominator by 15

• Multiply both numerator and denominator by 12

• Multiply both numerator and denominator by 10

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CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the equivalent fraction of 1/4 with a denominator of 60?

• 20/60

• 30/60

• 24/60

• 15/60

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CCSS.5.OA.A.1

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What is the result of subtracting 15 from 24 and then adding 40?

• 52

• 51

• 50

• 49

What is the simplified form of the fraction 49/60?

• 49/120

• 1/2

• 7/10

• 49/60

What is the only common factor between 49 and 60?

• 1

• 2

• 3

• 5

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the final simplified fraction obtained in the tutorial?

• 49/60

• 7/10

• 1/2

• 3/5

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CCSS.5.NF.A.1

CCSS.5.NF.A.2