Adding & Subtracting Fractions

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

What is the least common denominator you could use to subtract 1/3 and 1/4?

• 3
• 4
• 24
• 12

Tags

CCSS.4.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 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

Solve this equation using the least common denominator.
¼ + ½

• 3/4
• 2/8
• 6/4
• 6/8

Solve this mixed number equation:
1⅔ + 1⅚

• 3 1/2
• 2 7/6
• 3 7/6
• 2 7/9

What is the least common denominator of 1/2 and 3/7?

• 2
• 14
• 7
• 28

Tags

CCSS.4.NF.A.2

CCSS.4.OA.B.4

Convert this improper fraction to a mixed number: 12/6

• 1 6/6
• 1 2/6
• 1 1/3
• 2

• 5/14
• 3/7
• 5/7
• 5/14

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C

• 3/8
• 3/16
• 1/8
• 2/8

Tags

CCSS.4.NF.B.3D

CCSS.4.NF.B.3C