Addition and subtraction of fractions 08/20

3/12 + 4/12

• 7/12

• 6/12

• 12/12

• 1/12

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

1/4 + 3/4

• 4/4

• 1/4

• 1/8

• 3/8

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

• 5/14
• 3/7
• 5/7
• 5/14

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

• 3/8
• 3/16
• 1/8
• 2/8

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

• 4/5
• 4/10
• 2/5
• 5

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

2/6 -1/6

• 1/6

• 3/6

• 6/6

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

8/8-3/8

• 5

• 7/8

• 5/8

• 4/8

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 of 1/2 and 3/7?

• 2
• 14
• 7
• 28

• 14/16
• 7/8
• 8/7
• 4/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2