Adding and Subtracting Fractions

What are the steps for making two unlike denominators like?

• Look at the denominators

• Convert (change) the fractions based on the OPPOSITE denominator to find the Common Denominator

• Rewrite your now completed converted fractions

• Multiply the numerators by the same opposite denominator

• Find the LCM or use the butterfly method

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When solving for LIKE denominator fractions, what are the steps?

• Bring the denominator straight down

• Line up your whole numbers (if any) with the fractions they were with

• Line up your fractions (top to bottom)

• Solve for your numerators and regroup if needed

• Solve your whole numbers with any possible regroupings.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

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. 

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the least common denominator you could use to subtract 1/3 and 1/4?

• 3
• 4
• 24
• 12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Solve this equation using the least common denominator.
¼ + ½

• 3/4
• 2/8
• 6/4
• 6/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 5/14
• 3/7
• 5/7
• 5/14

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

8/10 + 3/5

• 11/15
• 1 1/5
• 14/15
• 1 4/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Tags

CCSS.7.NS.A.1C

Tags

CCSS.7.NS.A.1C