Adding and Subtracting Fractions Unlike Denominator

Danny added the following fractions incorrectly. What was the first step that Danny needed to take to add the following fractions?

• Danny needed to find the Least Common Multiple to find a common denominator of the fractions before adding.

• Danny left his answer as an improper fractions

• Danny did the wrong operation, he did not add.

• Danny did not make a mistake.

Answer explanation

Remember,

Step 1: Find the Least Common Multiple to find a common denominator

Tags

CCSS.7.NS.A.1C

What is the process of making two fractions with unlike denominators able to be added or subtracted called?

• Finding the least common multiple or least common denominator

• Addition

• Multiplication

• Reverse multiplication

Tags

CCSS.7.NS.A.1C

When adding and subtracting fractions, which value needs to be the same in all values being added/subtracted?

• Numerator

• Denominator

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

• A

• B

• C

• D

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 14/16

• 7/8

• 8/7

• 4/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of these fractions in lowest terms?

• 5/12

• 5/24

• 6/12

• 6/144

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

• 1

• 3/6

• 1/2

• 2

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

2/6 + 1/2 =

• 5/6

• 3/6

• 4/6

• 3/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

To add or subtract, two fractions must have...

• a monkey.

• unlike terms.

• common denominators.

• the same numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Jada ate 3/8 of a pizza and Isaiah ate 1/4 of the pizza. How much pizza did they eat in all?

• 1/2

• 5/8

• 3/4

• 7/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2