Adding and subtracting fractions

• 4/5
• 4/10
• 2/5
• 5

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the sum of these fractions?

• 4/5
• 3/20
• 17/20
• 4/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 1/12
• 1
• 2/35
• 23/25

Tags

CCSS.7.NS.A.1C

Simplify ²⁴/₁₀

• 2
• ⁶/₅ or 1¹/₅
• ¹²/₅ or 2²/₅

Tags

CCSS.4.NF.A.1

After a picnic, there is ³/₈ of a blueberry pie, ²/₈ of an apple pie, and ⁵/₈ of a peach pie left over. How much total pie is there?

• ⁸/₈ or 1
• ⁰/₈ or 0
• 1 ⁴/₈ or 1 ¹/₂
• ¹⁰/₈ or 1 ²/₈ or 1 ¹/₄

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the Least Common Denominator(LCD) of 2/3 + 1/2?

• 2

• 3

• 6

• 12

Tags

CCSS.4.NF.A.2

At the neighborhood block party, Cora served 1/2 of a gallon of hot chocolate and 1/10 of a gallon of apple cider. How much hot chocolate and apple cider did Cora serve?

• 3/5
• 2/5
• 2/11
• 1/6

Tags

CCSS.4.MD.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

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2