Adding and Subtracting Fractions

Mrs. Kronenfeld spent 2 1/5 hours reading a book and 1/2 hour on her Peloton. Which models or statements represent the problem. Choose all that are correct.

• You can use a common denominator of 10 can be used to add the fractions.

• Mrs. Kronenfeld spent more than 3 hours combined on her activities.

• The sum can be written as 11/5 + 1/2

• 2 2/10 + 5/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

​ ​ A common denominator of 18 (choose which set of fractions can be used for a common denominator of 18)

• 3/4, 2/5

• 2/3, 5/8

• 3/6, 2/9

• 1/2, 7/8

Choose the set of fractions that can be used for a common denominator of 9

• 2/9, 1/3

• 1/3, 2/6

• 9/10, 4/9

• 5/6, 2/3

Choose which set of fractions can have a common denominator of 10

• 7/8, 1/2

• 3/4, 5/6

• 1/2, 6/7

• 3/5, 1/2

A city park has two trails. One trail, the Idyllwild, is 4 2/9 mile long and the other trail, the Sequoia, is 2 1/3 mile long. How much longer is the Idyllwild trail than the Sequoia trail? Enter your answer below.

(a)  

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Mrs. McNitt has a busy afternoon. She makes a list of all the tasks she has to complete and how long it will take to complete each task.

Grades papers 2/3

Cooks Dinner 1/2

Works out 3/4

Read 5/6

How long will it take Mrs. McNitt to complete all her tasks?

• Over 3 hours

• 2 9/12 hours OR

  2 3/4 hours

• 2 hours

• 9/16 of an hour

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Match the following

• 9/11 - 6/11 =

• 15/19

• 1/2 + 1/4 =

• 3/11

• 2/6 + 1/2 =

• 6/7

• 8/19 + 7/19 =

• 5/6

• 2/7 + 4/7 =

• 3/4

Tags

CCSS.5.NF.B.5B

Mrs. McNitt says it will take her less than 1 1/4 hours to complete her tasks because they will only take 9/12 of an hour to complete. Is she correct?

Mrs. McNitt ​ (a)   correct. To solve this problem she should multiply the numerator of the fraction for each task by the factor used to create ​ the ​ (b)   . It will take her ​ (c)   hour(s) for these tasks, which is ​ (d)   than​ 1 1/4 hours.

• is
• is not
• common denominator
• least common multiple
• numerator
• 2 9/12
• 6/12
• more
• less

Tags

CCSS.5.NF.B.5B

What is 4 2/3 + 1 2/9

• 5 4/12

• 5 4/27

• 5 8/9

• 4 3/4

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2