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Finding Area: Decomposing and Summing Figures

Finding Area: Decomposing and Summing Figures

Assessment

Interactive Video

Mathematics

1st - 6th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

This lesson teaches how to find the area of a figure by decomposing it into smaller rectangles and summing their areas. The video covers the basic formula for area, A = l × w, and demonstrates calculations using different units such as feet and centimeters. Examples include decomposing shapes into rectangles and calculating the total area by adding the areas of individual rectangles. The lesson concludes with a practical example of finding the area of a dog pen.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

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

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

How do you find the area of a shape by decomposing it?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

Calculate the area of a rectangle with a length of 5 units and a width of 4 units.

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the total area when you add 24 square centimeters and 9 square centimeters?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

If a dog pen has dimensions of 7 feet by 5 feet and 3 feet by 3 feet, what is the total area?

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