Adding Fractions with Unlike Denominators: Word Problem Challenge

Cindy and Michael need 1 gallon of orange paint for a Halloween project. They have 2/5 gallon of red paint and 1/2 gallon of yellow paint. The video explains how to add these fractions by finding a common denominator, using visual aids like grids. It concludes that they only have 9/10 of a gallon, which is insufficient. The video also explores alternative ways to think about the problem.

How much red paint does Cindy have?

• 1 gallon

• 2/5 gallon

• 3/4 gallon

• 1/2 gallon

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the total amount of paint Cindy and Michael need?

• 1/2 gallon

• 2 gallons

• 1 gallon

• 3/4 gallon

Tags

CCSS.7.EE.B.3

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

• Subtract the fractions

• Find a common denominator

• Divide the fractions

• Multiply the fractions

Tags

CCSS.7.NS.A.1C

What is the smallest common denominator of 2/5 and 1/2?

• 5

• 2

• 1

• 10

How many tenths is 2/5 equivalent to?

• 2/10

• 4/10

• 5/10

• 6/10

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

How many tenths is 1/2 equivalent to?

• 5/10

• 4/10

• 6/10

• 2/10

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the sum of 4/10 and 5/10?

• 11/10

• 10/10

• 9/10

• 8/10

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Do Cindy and Michael have enough paint for their project?

• Yes, they have exactly 1 gallon

• No, they have less than 1 gallon

• Yes, they have more than 1 gallon

• No, they have more than 2 gallons

Tags

CCSS.6.RP.A.3D

What is another way to determine if they have enough paint without adding fractions?

• Subtract 2/5 from 1/2

• Multiply 2/5 and 1/2

• Compare 2/5 to 1/2

• Divide 2/5 by 1/2

Tags

CCSS.7.RP.A.3

What is the total amount of paint Cindy and Michael have in tenths?

• 11/10

• 9/10

• 8/10

• 10/10

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B