Add/Subtract Fractions With Like And Unlike Denominators

• 4  2/3
• 3  4/5
• 5  2/7
• 5  1/6

Tags

CCSS.7.NS.A.1C

• 2  2/3
• 7  1/2
• 7
• 6

Tags

CCSS.7.NS.A.1C

3/9 + 4/9

• 7/18

• 7/9

• 12/9

• 12/81

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What number could be a common denominator for these three fractions?
1/2   and   1/3   and   1/4

• 9

• 8

• 12

• 6

• 1/12
• 1
• 2/35
• 23/25

Tags

CCSS.7.NS.A.1C

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.
5/9 + 2/9 + 4/9

•  2/9

•   6/9

• 11/27

• 12/3

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

1/2 + 2/5

• 9/10

• 7/10

• 1 3/10

• 3/7

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

• 3

• 4

• 24

• 12

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