Mastering Addition and Subtraction of Fractions with Different Denominators

This video tutorial on the Tech Math Channel covers adding and subtracting fractions with different denominators. It explains the concept of equivalent fractions to make denominators the same, using examples to demonstrate the process. The video also introduces mixed numbers in fraction operations, providing a comprehensive guide to handling fractions with different denominators.

What is the first step in adding fractions with different denominators?

• Add the numerators directly

• Find a common denominator

• Multiply the denominators

• Subtract the numerators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What common denominator do you use for fractions with denominators 2 and 8?

• 8

• 16

• 4

• 10

What is the process called when you change fractions to have the same denominator?

• Fraction normalization

• Denominator unification

• Fraction simplification

• Equivalent fraction conversion

Tags

CCSS.4.NF.A.1

CCSS.5.NF.B.5B

How do you convert 1/2 to have the same denominator as 3/8?

• Multiply top and bottom by 3

• Multiply top and bottom by 2

• Multiply top and bottom by 4

• Multiply top and bottom by 8

What is the sum of 3/8 and 4/8?

• 12/8

• 7/16

• 1/2

• 7/8

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

To subtract fractions with different denominators, you first need to:

• Add the fractions

• Divide the denominators

• Subtract the numerators

• Find the least common multiple

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What do you multiply by 6 to get a common denominator of 12?

• 3

• 4

• 2

• 6

What is the equivalent fraction of 5/6 to have a denominator of 12?

• 10/12

• 5/12

• 20/12

• 15/12

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

After converting to common denominators, what is the result of 10/12 - 3/12?

• 7/12

• 13/12

• 10/24

• 3/12

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the result of subtracting 1/4 from 5/6 after converting to a common denominator?

• 7/12

• 3/12

• 2/3

• 13/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2