Adding Fractions

How do I add this fractions? 

• 6/6
• 6/12
• 5/6
• 6/36

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How do I add this fraction?

• 23/10
• 7/7
• 7/10
• 8/15

Tags

CCSS.7.NS.A.1C

3/5 + 3/10

• 9/12

• 9/10

• 3/5

• 6/10

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

3/20 + 3/4

• 18/20

• 6/20

• 9/10

• 9/20

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

• Yes, 2 + 3 is 5

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

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction
• Rewrite the fractions in the simplest form. 
• Find a common denominator. 
• Make each fraction into an improper faction. 

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

• 12
• 14
• 7
• 6

Tags

CCSS.4.NF.A.2

Are the following two fractions equivalent?
3/5 and 6/9

• yes
• no