Adding Fractions

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

2/5 + 3/10

• 7/10

• 5/10

• 1/2

• 5/15

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

Add 4/6 + 2/6=?

• 1 = 6/6

• 5/6

• 6/12

• 2/6

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What number could be a common denominator for these two fractions?
1/5   and   5/6?

• 30

• 11

• 6

• 5

5/8 + 1/4

• 7/8

• 6/8

• 3/4

• 2/3

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

add these fractions

• 6/6

• 6/12

• 5/6

• 6/36

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

1/3 + 1/9

• 4/9

• 9/12

• 6/15

• 3/12

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Which problem has a sum of 4/9?

• 2/9 + 2/3

• 2/9 + 1/9

• 2/3 + 2/3

• 2/9 +2/9

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2