Modeling Fraction Subtraction with Unlike Denominators

What do you need to have when adding unlike fractions

• common denominator

• common numerator

• common numerator and denominator

• common fractions

Tags

CCSS.7.NS.A.1C

4/5 - 1/20 = 

• 0

• 20/15

• 3/15

• 15/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the difference of these fractions in lowest terms?

• 2/4

• 0

• 0/4

• 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

13/15 - 3/4

• 10/9

• 39/60

• 7/60

• 97/60

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

Sally ran 1/3 of a mile and swam 5/6 of a mile. In simplest form, how much farther did she swim than she ran?

• 1/2

• 5/18

• 4/3

• 3/6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the least common denominator for this problem?

• 6

• 12

• 18

• 24

What is the least common denominator for this problem?

• 18

• 9

• 24

• 12

What is the least common denominator for this problem?

• 24

• 18

• 32

• 16

What is the least common denominator for this problem?

• 18

• 9

• 24

• 12