Adding Unit Fractions

A construction company is digging a pit to build the foundation of a house. At the end of the first day, the company had hauled away 1/6 of a truckload of dirt. On the second day, they hauled away 2/6 of a truckload. How many truckloads did they haul away in all?

• 1/4 truckload

• 1/2 truckload

• 3/4 truckload

• 1/3 truckload

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

5/12 + 1/3

• 6/12

• 9/12

• 6/15

• 3/4

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

5/6 + 1/12 =

• 6/18

• 5/60

• 11/12

• 10/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/9 + 2/27

• 3/27

• 5/27

• 3/27

• 3/36

Tags

CCSS.7.NS.A.1C

Add.
4/7 + 3/5

• 7/35

• 1  6/35

• 16/35

• 40/35

Tags

CCSS.7.NS.A.1C

What must you have in order to add fractions?

• different numerators

• common numerators

• common denominators

• opposite denominators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

50/100 + 25/100 =

• 100/75

• 100/100

• 75/100

• 52/100

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

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

2/6 + 1/2 =

• 5/6

• 3/6

• 4/6

• 3/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2