Add Fractions with Unlike Denominators Using Models

Add 2/3 + 5/12=?

• 7/12

• 1 1/12

• 11/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 11/12
• 9/16
• 9/24
• 1/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• A
• B
• C
• D

Tags

CCSS.4.NF.B.3A

_Add

• 2/3

• 15/18

• 1/4

• 9/27

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum?

• 1

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum?

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

(Choose one that is true) When you add or subtract fractions with unlike denominators you..

• Find the greatest common factor to change your denominator

• Change the denominator by picking a random number then divide

• Find the least common multiple to change your denominator

• none of these are true

Tags

CCSS.7.NS.A.1C

5/10 + 8/5

• 5/9

• 1/10

• 2 1/10

• 2 2/10

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

What is the sum of 1/2 + 1/3 + 1/6?

• 3/14

• 3/11

• 1

• 6/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2