Adding and Subtracting Fractions

• 2/5
• 5/6
• 4/6
• 1/5

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CCSS.4.NF.A.2

• 3/20
• 1/1
• 3/9
• 1/9

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CCSS.7.NS.A.1C

• 1
• 3/6
• 1/2
• 2

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• 2/15
• 2/0
• 1/2
• -1/2

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CCSS.4.NF.A.2

• 14/16
• 7/8
• 8/7
• 4/10

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CCSS.4.NF.A.1

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What is the sum of these fractions in lowest terms?

• 22/5
• 6/3
• 22/15
• 6/15

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of these fractions in lowest terms?

• 4/5
• 3/20
• 17/20
• 4/20

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CCSS.4.NF.B.3

CCSS.4.NF.C.5

Add the fractions together?

• 3/8
• 11/15
• 2/15
• 1/2

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CCSS.4.NF.A.1

CCSS.4.NF.A.2

CCSS.4.NF.C.5

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction
• Rewrite the fractions in the simplest form. 
• Find a common denominator. 
• Make each fraction into an improper faction. 

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CCSS.4.NF.A.2

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

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CCSS.4.NF.A.1

CCSS.4.NF.A.2

CCSS.4.NF.C.5