Decomposing Rectangles to Find Area

Jada said that she found the area of figure A by cutting it into 3 rectangles, finding their separate areas, and then adding those areas. Which strategy best describes what Jada did?

• decomposing and rearranging

• decomposing

• enclosing and subtracting

• counting grid squares

Select all the true statements about this shape (Hint: Select all means more than one)

• The area can be found by decomposing into rectangles

• The area cannot be found because there are too many measurements

• The area can be found by multiplying 60x30 and subtracting missing pieces

• The area can be found by adding all the side lengths together

Tags

CCSS.3.MD.C.7D

What is the area of this shape? Hint: Break into smaller shapes then add together.

• 30m²

• 48m²

• 65m

• 81m

Tags

CCSS.3.MD.C.7D

What is the area of the irregular figure shown?

• 294 kilometers²

• 336 kilometers²

• 324 kilometers²

• 290 kilometers²

Tags

CCSS.3.MD.C.7D

Find the area. Hint: Divide the figure into two rectangles. Find the area of each rectangle. Add the two areas.

• 61

• 224

• 238

• 468

Tags

CCSS.3.MD.C.7D

• 322
• 282
• 300
• 348

Tags

CCSS.3.MD.C.7D

• 294
• 336
• 324
• 290

Tags

CCSS.3.MD.C.7D

• 117
• 120
• 108
• 100

Tags

CCSS.6.G.A.1

Select the TRUE statement about this figure.

• The area can be found by decomposing into rectangles

• The area cannot be found because there are too many measurements

• The area can be found by multiplying 60x30.

• The area can be found by adding all the side lengths together

Tags

CCSS.3.MD.C.7D

Find the area.

• 126 ft²

• 39 ft²

• 156 ft²

• 80 ft²

Tags

CCSS.3.MD.C.7D