Adding Fractions with Unlike Denominators

This video tutorial teaches how to add fractions with unlike denominators using fraction bars. It covers the concept of common denominators, equivalent fractions, and provides examples of adding fractions when one denominator is a divisor of the other or when denominators are multiples of 10. The video also addresses common mistakes and demonstrates step-by-step solutions for specific fraction addition problems.

What is necessary for adding fractions together?

• Same numerators

• Same denominators

• Different denominators

• Different numerators

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CCSS.L.3.4C

CCSS.L.4.4B

CCSS.L.5.4B

CCSS.L.6.4B

CCSS.L.7.4B

What does the root 'equi' in equivalent fractions mean?

• Equal

• Lesser

• Different

• Greater

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CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

Which of the following is an equivalent fraction of 1/2?

• 4/7

• 3/5

• 2/4

• 1/3

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

When one denominator is a divisor of the other, how many fractions need to be changed?

• All

• One

• Two

• None

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CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is 1/10 equivalent to in hundredths?

• 1/100

• 20/100

• 10/100

• 5/100

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

What common mistake do students make when adding fractions with unlike denominators?

• Multiplying the numerators

• Adding the numerators and denominators directly

• Subtracting the denominators

• Dividing the numerators

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CCSS.4.NF.B.3A

What is the correct equivalent fraction for 1/2 when adding it to 1/3?

• 2/3

• 5/6

• 4/6

• 3/6

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CCSS.4.NF.A.1

CCSS.5.NF.B.5B

How do you decide which equivalent fractions to use?

• Use the same fraction

• Look at the denominator of the other fraction

• Look at the numerator of the other fraction

• Choose any random number

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of 1/3 and 2/4?

• 5/7

• 7/12

• 3/7

• 10/12

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

Who was correct about the sum of 1/3 and 2/4?

• Sami

• Treyvan

• Neither

• Both

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CCSS.5.NF.A.1

CCSS.5.NF.A.2