Adding and Subtracting Fractions

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the least common denominator for 6/7 and 1/2?

• 12
• 14
• 7
• 6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

5/12 + 1/3

• 6/12

• 9/12

• 6/15

• 3/4

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

7/8  -  5/6

• 1/24
• 2/3
• 5/24
• 8/9

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

7/18 + 1/3

• 8/18

• 13/18

• 8/21

• 2/6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

11/12  -  1/8

• 3/4
• 11/24
• 19/24
• 13/14

Tags

CCSS.7.NS.A.1C

3/20 + 3/4

• 18/20

• 6/20

• 9/10

• 9/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

5/8  -  9/16

• 2/3
• 1/16
• 15/16
• 7/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Dylan had a whole cupcake in his lunch bag. He ate 1/4 of it. How much does he have left?

• 1/4
• 1/2
• 1/3
• 3/4

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B