Equivalent Fractions, Sum of Unit Fractions, Mixed Numbers

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.7.NS.A.1C

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the fractions. Simplify if needed.

Tags

CCSS.7.NS.A.1C

Add the fractions. Simplify if needed.

• 1

• 2

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Add the fractions. Simplify if needed.

• 1

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 60

• 30

• 24

• 120

Add the mixed numbers vertically. Simplify if needed.

Tags

CCSS.7.NS.A.1C

Add the mixed numbers vertically. Simplify if needed.

Tags

CCSS.7.NS.A.1C

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2