Finding Area with Fractional Side Lengths

What is the area of this region of the rectangle?

• 1 square unit

• 20 square units

• 18 square units

• 3/4 X 5 square units

• 5 3/4 square units

Tags

CCSS.3.MD.C.5

CCSS.3.MD.C.6

CCSS.3.MD.C.7

What other expressions represent the shaded region?

• 3/4 X 5

• 15/4

• 3/20

• 3 3/4

Tags

CCSS.3.G.A.2

CCSS.3.MD.C.5

CCSS.3.NF.A.1

Allison wanted to paint this portion of the floor. What is the area?

• 20 square units

• 14/3 X 4 square units

• 17/3 divided by 4 square units

• 3/3 X 20 square units

Tags

CCSS.3.MD.C.5

CCSS.3.MD.C.6

CCSS.3.MD.C.7

CCSS.3.OA.A.3

What are some other expressions for the area?

• 4 divided by 14/3

• 2/3 X 4

• 56/3

• 18 2/3

Tags

CCSS.3.MD.C.5

CCSS.3.MD.C.6

CCSS.3.MD.C.7

Robert planted a garden. It is the shaded part. What is its area?

• 3 divided by 15/4 square units

• 15 divided by 3 square units

• 3 X 4 square units

• 3 3/4 X 3 square units?

Tags

CCSS.3.G.A.2

CCSS.3.MD.C.5

CCSS.3.MD.C.6

CCSS.3.MD.C.7

What are some other expressions for the shaded region?

• 15/4 X 3

• 45 divided by 4

• 11 1/4

• 48 divided by 3

Tags

CCSS.3.MD.C.5

CCSS.3.MD.C.6

CCSS.3.MD.C.7

Where do you see the expression of the diagram?

• There are 2/4 X 9 rows of shaded area.

• 2 X 9 =18. 18 X 4= 72/4

• The squares are each divided in fourths. Each row has 9 shaded fourths. There are two rows of these shaded fourths.

• This is incorrect. There are 2 rows, but there are 9/3 shaded.

Tags

CCSS.3.G.A.2

CCSS.3.MD.C.5

CCSS.3.MD.C.6

CCSS.3.MD.C.7

CCSS.3.NF.A.1

CCSS.3.OA.A.3

Could we say that 5 X 4/3 = 6 2/3?

Tags

CCSS.3.NF.A.3

Ma Kyiah colored this part of her wall light blue. How much did she color?

• 2/3 X 4 square units

• 12/2 square units

• 4 divided by 2/3 square units

• 8 square units

Tags

CCSS.3.G.A.2

CCSS.3.MD.C.5

CCSS.3.MD.C.6

CCSS.3.MD.C.7

CCSS.3.NF.A.1

Hmmm... are there other expressions for the part she colored?

• 12/2

• 4 X 2/3

• 2 2/3

• 8/3

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.3