Area Study Guide

Use the rectangle below to answer all parts. Each ■ is a square unit. Count to find the area of the rectangle.

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CCSS.3.MD.C.5A

Use the rectangle below to answer all parts. Each ■ is a square unit. Draw and label a different rectangle with the same area.

Complete the equation to determine the area of the shaded rectangle.

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CCSS.3.MD.C.6

On the grid below, draw and shade a rectangle that has an area of 15 square units. Label the side lengths.

Izzy determined the area of a figure to be 24 square inches. Which of the following could be the figure she is working on? Choose THREE correct answers.

• Figure A: 6 in. by 6 in. rectangle

• Figure B: 2 in. by 12 in. rectangle

• Figure C: 6 in. by 4 in. L-shaped figure

• Figure D: 4 in. by 2 in. plus 10 in. by 2 in. L-shaped figure

• Figure E: 3 in. by 8 in. rectangle

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CCSS.3.MD.C.7D

The figure below shows a big shaded rectangle with a small rectangle cut out of it.

a. Area of the shaded rectangle before it was cut: _ x _ = _

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CCSS.3.MD.C.7D

The figure below shows a big shaded rectangle with a small rectangle cut out of it. b. Area of the unshaded rectangle: _ x _ = _

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CCSS.3.MD.C.7D

The figure below shows a big shaded rectangle with a small rectangle cut out of it. c. Area of the shaded rectangle after it was cut: _ - _ = _

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CCSS.3.MD.C.7D

The figure below shows a small rectangle cut out of a big rectangle. Find the area of the shaded part of the figure.

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CCSS.3.MD.C.7D

All of these rectangles have the same area. Use the associative property and move the parenthesis to find the unknown side lengths.

• 8 x 6 = 48

  Area = 48 sq. cm.

• 8 x 6 = 40

  Area = 40 sq. cm.

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CCSS.3.MD.C.7B

CCSS.4.MD.A.3