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decimals Area & Perimeter Worksheets

These decimal area and perimeter worksheets help students practice calculating measurements using decimal numbers. Students work with rectangles, quadrilaterals, and circles while developing precision in decimal computation and geometric problem-solving skills.

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7th Grade

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About these worksheets

These worksheets cover a comprehensive range of quadrilateral measurement skills. Students find the area and perimeter of rectangles, explore rectilinear shapes by decomposing them into smaller rectangles, create rectangles with given area or perimeter constraints, and work with scale factors. Problem sets include whole numbers, decimals, and fractions, and span third through seventh grade standards.

decimals Area & Perimeter Worksheets - Finding Width, Height and Area of Scale Rectangles worksheet

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Finding Width, Height and Area of Scale Rectangles

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Use a scale factor to find a missing width or height of a rectangle.
Keep side lengths in the same ratio when a rectangle is enlarged or reduced.
Calculate the area of a rectangle after its dimensions have been scaled.

decimals Area & Perimeter Worksheets - Finding Perimeter & Area with Decimals worksheet

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Finding Perimeter & Area with Decimals

Find the perimeter of a quadrilateral by adding all the side lengths when the measurements include decimals.
Find the area of rectangles and other quadrilaterals using given decimal dimensions.

Circles

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About these worksheets

These worksheets cover the essential circle measurement formulas. Students practice finding the area using A = πr², the circumference using C = πd or C = 2πr, and solving for both in combined problem sets. Activities include working with radius and diameter values and applying pi in calculations. Aligned with seventh grade geometry standards.

decimals Area & Perimeter Worksheets - Area and Circumference Circle worksheet

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Area and Circumference Circle

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Use the radius or diameter to find a circle’s circumference.
Use the radius to find a circle’s area.
Work with pi (π) in formulas, including using an approximate value like 3.14.
Round decimal answers to the requested place value and include the correct units.