Adding Fractions with Unlike Denominators

Why is it necessary to have a common denominator to add fractions?

• To simplify the fractions before adding

• To make the denominators the same for easy addition

• Because it's a mathematical rule without exceptions

• To ensure the fractions are equivalent before adding

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the least common multiple of 9 and 3?

• 3

• 27

• 9

• 18

How do you rename 1/3 to have a denominator of 9?

• Multiply both numerator and denominator by 3

• Multiply both numerator and denominator by 9

• Divide both numerator and denominator by 3

• No need to rename as they are already equivalent

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

After finding the common denominator, what is the next step in adding fractions?

• Multiply the numerators

• Simplify the fractions

• Add the numerators while keeping the denominator the same

• Add the denominators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the final step after adding fractions with a common denominator?

• Convert the fraction to a decimal

• Multiply the fractions

• Divide the numerator by the denominator

• Check if the fraction can be simplified

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the simplified form of 7/9?

• 2/3

• 1/3

• 7/9

• Cannot be simplified

What is the least common multiple used to add 3/10 and 2/6?

• 12

• 30

• 60

• 15

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

How is the fraction 2/6 renamed with a denominator of 30?

• Multiply both numerator and denominator by 10

• It does not need to be renamed

• Multiply both numerator and denominator by 6

• Multiply both numerator and denominator by 5

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the result of adding 3/10 and 2/6 after finding a common denominator?

• 5/30

• 12/60

• 19/30

• 15/30

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Why is it important to simplify a fraction after adding?

• To prepare the fraction for subtraction

• To find the highest possible denominator

• To ensure the fraction is in its simplest form for easy understanding

• To convert the fraction into a whole number

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2