Adding and Subtracting Mixed Numbers Unlike Denominators

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the mixed numbers vertically. Simplify if needed.

Tags

CCSS.7.NS.A.1C

What math equation is being represented in the picture?

Tags

CCSS.4.NF.B.3A

Can you add fractions with different denominators?

• Yes, you just add straight across

• Yes, you just simplify at the end

• No, you must find a common denominator

• No, the math police will come get you

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 1 3/4

• 7/4

• 2 3/4

• 1 7/4

Tags

CCSS.7.NS.A.1C

• 1 4/5

• 26/20

• 4/5

• 13/10

Tags

CCSS.7.NS.A.1C

• 1 5/8

• 3 1/8

• 2 5/8

• 21/8

Tags

CCSS.7.NS.A.1C

• 18 7/12

• 193/12

• 16 1/12

• 1/12

Tags

CCSS.7.NS.A.1C