Grade 8 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

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

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

• 3/4
• 2/8
• 6/4
• 6/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is 2/3 + 5/3 in simplest form?

• 7/3
• 7/6
• 1
• 2  1/3

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

2  1/2  x  1  1/2

• 4
• 3   3/4
• 3
• 2   1/4

Tags

CCSS.5.NF.B.6

2 ÷ 4/5

• 3   1/2
• 2   1/2 
• 1   3/8
• 1   1/5

 3  ÷  1  1/4

• 3  3/4
• 3  1/4
• 2  2/5
• 1  2/5

1  1/3  ÷ 2/3

• 2  2/3
• 2
• 8/9
• 1/2

Tags

CCSS.6.NS.A.1

4  1/6  ÷ 1  2/3

• 2/5
• 2  1/2
• 4  1/4
• 6  17/18

Tags

CCSS.6.NS.A.1