Adding and Subtracting Fractions Mastery

This video tutorial covers Chapter 7, focusing on adding and subtracting fractions and mixed numbers. It explains how to perform these operations when fractions have the same denominator, using both numerical and visual methods. The concept of unit fractions is introduced, and fractions are expressed as sums of unit fractions. Various methods to decompose fractions into sums are also explored.

How do you add fractions with the same denominator?

• Multiply the numerators

• Add both numerators and denominators

• Only add the numerators, keeping the denominator the same

• Subtract the numerators

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CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

What is the result of 1/5 + 3/5?

• 2/5

• 4/10

• 3/5

• 4/5

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CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

In picture problems, what does crossing out represent?

• Division

• Addition

• Subtraction

• Multiplication

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CCSS.2.OA.A.1

What is the result of subtracting 3/8 from 5/8?

• 2/8

• 2/16

• 3/5

• 8/5

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CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

What does a unit fraction represent?

• A fraction with any number in the numerator

• A fraction with 2 in the numerator

• A fraction with 0 in the numerator

• A fraction with 1 in the numerator

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CCSS.3.NF.A.2A

CCSS.3.NF.A.1

How many unit fractions represent 3/8?

• Two

• Three

• Five

• Four

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CCSS.3.NF.A.2B

CCSS.3.NF.A.1

What is the sum of 1/4 + 1/4 + 1/4?

• 2/4

• 3/4

• 1/4

• 1/12

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CCSS.4.NF.B.3A

How can 5/9 be represented as the sum of fractions?

• None of the above

• All of the above

• 5/9 = 2/9 + 3/9

• 5/9 = 1/9 + 4/9

Tags

CCSS.4.NF.B.3B

Which of the following is a way to represent 4/6?

• None of the above

• 2/6 + 2/6

• 1/6 + 1/6 + 1/6 + 1/6

• All of the above

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CCSS.4.NF.B.3B

What is essential to remember when adding or subtracting fractions?

• None of the above

• Always convert to mixed numbers first

• Keep the denominator the same if they are identical

• Change the denominator

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CCSS.5.NF.A.1

CCSS.5.NF.A.2