Calculating Area of Rectangles with Fractions

Mrs. Macpherson introduces the concept of area, explaining how to calculate it using the formula length times width. She provides examples with whole numbers and then extends the concept to fractional dimensions, demonstrating how to multiply fractions to find the area. Simplification of fractions is also covered. A word problem is presented to apply these skills, and students are encouraged to practice with additional problems.

What is the formula for finding the area of a rectangle?

• Length + Width

• Length x Width

• Length - Width

• Length / Width

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

If a rectangle has a length of 6 inches and a width of 3 inches, what is its area?

• 24 square inches

• 18 square inches

• 12 square inches

• 9 square inches

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How should the area of a rectangle be labeled?

• Feet

• Cubic inches

• Square inches

• Inches

Tags

CCSS.3.MD.C.6

What is the area of a rectangle with a length of 10 feet and a width of 4 feet?

• 30 square feet

• 40 square feet

• 20 square feet

• 50 square feet

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How do you multiply the fractions 1/2 and 2/6?

• 1/2 ÷ 2/6

• 1/2 + 2/6

• 1/2 x 2/6

• 1/2 - 2/6

Tags

CCSS.5.NF.B.6

What is the simplified form of the fraction 2/12?

• 1/3

• 1/2

• 1/4

• 1/6

What is the area of a rectangle with side lengths 4/5 foot and 1/8 foot?

• 1/10 square feet

• 1/4 square feet

• 1/5 square feet

• 1/8 square feet

Tags

CCSS.5.NF.B.4B

What is the simplified form of the fraction 4/40?

• 1/5

• 1/10

• 1/8

• 1/4

In the word problem, what are the dimensions of Eric's planter?

• 1/3 foot by 2/3 foot

• 1/2 foot by 1/3 foot

• 1/4 foot by 2/3 foot

• 1/2 foot by 2/3 foot

Tags

CCSS.5.NF.B.6

What is the area of Eric's planter?

• 1/4 square feet

• 1/3 square feet

• 1/6 square feet

• 1/2 square feet

Tags

CCSS.5.NF.B.4B