Add Fractions Like Denominators

7/7 - 5/7 = ?

• 
• 
• 
• 

Tags

CCSS.4.NF.B.3A

To add or subtract fractions you must have

• Common numerators

• Common denominators

• Common multiples

• common factors

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

If we have common denominators and we want to add or subtract them we need to

• add/subtract the numerator and slide over the denominator.

• add/subtract the numerator and add/subtract the denominator.

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

3/12 + 4/12

• 7/12

• 6/12

• 12/12

• 1/12

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Add these Fractions

• 2/4

• 3/4

• 4/8

• 1

Tags

CCSS.4.NF.B.3A

2/6 -1/6

• 1/6

• 3/6

• 6/6

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

9/12 - 4/12

• 2/12

• 5/12

• 24

• 7/12

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

What is ALWAYS required when adding/subtracting fractions?

• The same numerators.

• The same denominators.

• Equivalent fractions.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D