Adding and Subtracting Fractions with Unlike Denominators

This video tutorial explains how to add and subtract fractions with different denominators. It begins with an introduction to fractions, defining numerators and denominators. The tutorial then demonstrates how to find a common denominator by multiplying the denominators of the fractions. It provides step-by-step instructions for converting fractions to equivalent fractions with a common denominator, allowing for straightforward addition or subtraction. The video concludes with a summary of the key steps involved in the process.

What is the top part of a fraction called?

• Denominator

• Numerator

• Fractionator

• Divider

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

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

• Add the numerators

• Find a common denominator

• Multiply the fractions

• Subtract the denominators

Tags

CCSS.7.NS.A.1C

How do you find a common denominator for fractions with different denominators?

• Multiply the denominators

• Subtract the denominators

• Add the denominators

• Divide the denominators

What is 1/2 equivalent to with a denominator of 6?

• 2/6

• 3/6

• 4/6

• 1/6

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the denominator of 1/3 when converted to have a common denominator with 1/2?

• 7

• 5

• 4

• 6

What is the sum of 1/2 and 1/3 when converted to have a common denominator?

• 4/6

• 5/6

• 6/6

• 3/6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

How do you add fractions once they have the same denominator?

• Multiply the numerators

• Only add the numerators

• Only add the denominators

• Add both numerators and denominators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What do you multiply the denominator of 1/4 by to get a common denominator of 20?

• 6

• 4

• 5

• 3

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the common denominator for 1/4 and 4/5?

• 40

• 25

• 20

• 9

What is the result of subtracting 1/4 from 4/5 when converted to have a common denominator?

• 11/20

• 9/20

• 13/20

• 15/20

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D