Common Denominators and Simplifying Fractions

When you add or subtract fractions with unlike denominators you..

• Find the greatest common factor to change your denominator

• Change the denominator by picking a random number then divide

• Find the least common multiple to change your denominator

• none of these are true

Tags

CCSS.7.NS.A.1C

3/4 - 2/10

• 11/20

• 9/10

• 11/24

• 9/4

Tags

CCSS.7.NS.A.1C

4/5 + 3/8 (be sure to simplify)

• 32/40

• 1 7/40

• 2 5/7

• 1 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

3/5 - 5/10

• 1/10

• 8/5

• 1/5

• 8/0

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the following fractions. SIMPLIFY

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

You must find the (a)   before you can add or subtract fractions with unlike denominators.

• common denominator

• common numerator

• multiple

• simplified fraction

Tags

CCSS.7.NS.A.1C

Mathematical Equivalence

ON

What is the sum of these 2 fractions? Simplify the answer.

Tags

CCSS.4.NF.B.3A

You must find the ​ (a)   before you can add or subtract fractions with unlike denominators.

• common denominator

• common numerator

• multiple

• simplified fraction

Tags

CCSS.7.NS.A.1C

• 10

• 15

• 20

• 25

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1