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Unit 7 - Lesson 8 - Grade 3: Illustrative Mathematics

Last updated over 1 year ago

16 Nsɛmmisa

Hyɛ no nsow a efi ɔkyerɛwfo no hɔ:

Grade 3 Unit 7

Lesson 8: Find the Perimeter

CC BY 2021 Illustrative Mathematics®

Akwankyerɛ

Grade 3 Unit 7

Lesson 8: Find the Perimeter

CC BY 2021 Illustrative Mathematics®

Lesson: Find the Perimeter

Number Talk: Decreasing Dividend (Warm Up)

Ways to Find Perimeter

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Something is Missing

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Cool Down: A Triangle and a Square

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Find the value of each expression mentally.

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2.

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3.

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4.

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5.

What do you notice?

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6.

What do you wonder?

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7.

Find the perimeter of the shape. Explain or show your reasoning.

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8.

Find the perimeter of the shape. Explain or show your reasoning.

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9.

Find the perimeter of the shape. Explain or show your reasoning.

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10.

Find the perimeter of the shape. Explain or show your reasoning.

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11.

Find the perimeter of the shape. Explain or show your reasoning.

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12.

Find the perimeter of this rectangle. Explain or show your reasoning.

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13.

All the short sides of this figure are the same length, and all the angles are right angles. Find the perimeter. Explain or show your reasoning.

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14.

All the sides of the octagon are the same length. Find the perimeter. Explain or show your reasoning.

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15.

Find the perimeter of the shape. Explain or show your reasoning.

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16.

Find the perimeter of the shape. Explain or show your reasoning.