Adding and Subtracting Fractions with Uncommon Denominators

Once I have completed adding or subtracting fractions, I should always ____________ if possible.

• make equivalent fractions

• add again

• simplify

• multiply

Tags

CCSS.7.NS.A.1C

• 2/5
• 5/6
• 4/6
• 1/5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/4 + 3/8 =

• 5/8

• 3/8

• 4/12

• 4/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

4/8 + 1/3 =

• 5/6

• 4/8

• 20/24

• 4/11

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

3/4 + 1/8

• 7/8

• 4/12

• 3/32

• 3/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

2/6 + 1/2 =

• 5/6

• 3/6

• 4/6

• 3/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When adding or subtracting fractions with unlike denominators, what is the first step?

• Add the numerators

• Add the denominators

• Find a common denominator

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When adding and subtracting fractions, what needs to be the same?

• the numerator

• the denominator

• nothing

• everything

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How can you find a common denominator?

• Add the denominators together

• Pick your favorite number

• Find a common multiple for the two denominators