Adding and Subtracting Fractions with Unlike Denominators

The video tutorial covers a multi-step word problem involving partitioning cookie cakes to represent different sprinkle fractions. It guides students through calculating total fractions for each type of sprinkle and determining the total space taken by sprinkles on the cakes. The tutorial also explains how to find the remaining cake space and offers practice problems for further learning.

What fraction of each cake is covered with red sprinkles?

• 4/12

• 1/6

• 2/3

• 1/3

Tags

CCSS.2.G.A.3

How is a third of the cake divided to accommodate green sprinkles?

• Into twelve equal parts

• Into six equal parts

• Into three equal parts

• Not divided further

Tags

CCSS.2.G.A.3

What fraction represents the total space taken by red sprinkles on both cakes?

• 4/12

• 1/3

• 2/3

• 2/6

Tags

CCSS.3.NF.A.2B

CCSS.3.NF.A.1

What fraction represents the space taken by green sprinkles on both cakes?

• 1/6

• 2/6

• 1/3

• 4/12

Tags

CCSS.3.NF.A.2B

CCSS.3.NF.A.1

How many twelfths are used to represent the space taken by white sprinkles on each cake?

• 2/12

• 8/12

• 4/12

• 6/12

Tags

CCSS.3.NF.A.2B

CCSS.3.NF.A.1

What fraction is equivalent to 2/3 when converted to twelfths?

• 8/12

• 6/12

• 2/12

• 4/12

Tags

CCSS.4.NF.A.1

CCSS.3.NF.A.3B

CCSS.3.NF.A.3A

What is the total fraction of the cakes covered by sprinkles?

• 2 and 4/12

• 1 and 4/12

• 2/3

• 1 and 8/12

Tags

CCSS.5.NF.A.2

CCSS.5.NF.A.1

What is the correct way to add fractions with unlike denominators?

• Find a common denominator and add

• Just add the numerators

• Multiply the fractions

• Cannot be added

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

How much of the cakes is left without sprinkles?

• 1 and 4/12

• 4/12

• 2/3

• 1 and 8/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What new fraction set is suggested for further practice with red sprinkles?

• 2/10

• 1/4

• 2/15

• 1/5

Tags

CCSS.3.NF.A.2B

CCSS.3.NF.A.1