Adding Mixed Numbers with Unlike Denominators

In this video, Mr. J explains how to add mixed numbers by solving two example problems. The first example involves adding 3 2/5 and 2 1/2, where he demonstrates the process of finding a common denominator and adding the fractions and whole numbers separately. The second example involves adding 9 7/8 and 8 3/4, where he shows how to handle improper fractions by converting them into mixed numbers. Throughout the video, Mr. J emphasizes the importance of finding a common denominator and checking if the fractional part can be simplified.

What is the first step in adding mixed numbers?

• Convert the mixed numbers to improper fractions

• Find a common denominator for the fractions

• Subtract the smaller fraction from the larger one

• Add the whole numbers first

Tags

CCSS.7.NS.A.1C

What is the common denominator for the fractions 2/5 and 1/2?

• 10

• 5

• 2

• 1

What is 2/5 converted to a fraction with a denominator of 10?

• 5/10

• 4/10

• 2/10

• 1/10

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the sum of 3 and 2/5 plus 2 and 1/2?

• 5 and 9/10

• 5 and 1/2

• 6 and 1/10

• 4 and 9/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the common denominator for the fractions 7/8 and 3/4?

• 2

• 8

• 1

• 4

What is 3/4 converted to a fraction with a denominator of 8?

• 6/8

• 7/8

• 5/8

• 3/8

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the sum of 9 and 7/8 plus 8 and 3/4 before simplifying?

• 16 and 13/8

• 18 and 5/8

• 17 and 13/8

• 17 and 10/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

How many whole groups of 8 can be pulled out of 13/8?

• 2

• 1

• 4

• 3

What is the remainder when 13 is divided by 8?

• 5

• 6

• 4

• 3

Tags

CCSS.4.NBT.B.6

What is the final answer for the sum of 9 and 7/8 plus 8 and 3/4?

• 18 and 7/8

• 17 and 5/8

• 18 and 5/8

• 17 and 13/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2