Adding and Subtracting Fractions with Unlike Denominators

To add or subtract, two fractions must have...

• a monkey.

• unlike terms.

• common denominators.

• the same numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 3/20
• 1/1
• 3/9
• 1/9

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

On Monday, Noah played video games for 5/6 of an hour. On Tuesday, he played for 2/3 of anhour. Which equation shows how much longer he played on Monday than on Tuesday?

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/3 + 2/5

• 4/15

• 4/8

• 11/15

• 2/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of these fractions in lowest terms?

• 4/5

• 3/20

• 17/20

• 4/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

4/6 - 1/6 = ?

• 5/6

• 1/12

• 3/6

• 5/12

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the Least Common Denominator of 1/5 + 2/10

• 5

• 10

• 50

• 15

I can add and subtract fractions with unlike denominators...

• With pictures and models

• Using strategies

• I'm still confused.

Tags

CCSS.7.NS.A.1C

• 14/16
• 7/8
• 8/7
• 4/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/3 + 1/9

• 4/9

• 9/12

• 6/15

• 3/12

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D