Fractions Add Unlike Denominators

What is the the next step to finding this answer?

• Add the numerators (1+1=2)

• Multiply 12 X 1 for both fractions to find a new numerator
  

• Multiply to find each new numerator by the multiple used to get 12. (3 X1) (4 X 1)

• This is a mistake, you don't need to convert to twelfths

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

How do I add this fraction?

• 23/10

• 7/7

• 7/10

• 8/15

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

How do I add this fraction? 

• 5/8

• 20/32

• 4/12

• 8/5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of these fractions?

• 4/5

• 3/20

• 17/20

• 4/20

Tags

CCSS.7.NS.A.1C

What is the sum of these fractions in lowest terms?

• 7/18

• 7/9

• 12/9

• 12/81

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How do I add this fraction? 

• 11/15

• 3/8

• 3/15

• 11/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Solve.  2/3 + 7/12

• 3/5

• 9/15

• 15/12

• 5/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the first thing thing we need to know in order to add Fractions?

• Check the numerator

• Just add across

• Check if the denominators are alike or unlike

• Multiply

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What should we do if the denominators are unlike?

• Add them

• Nothing just solve it

• Make them equivalent by multiplying

Tags

CCSS.7.NS.A.1C