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Changes apply to unlocked questions.

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We pick the skills and settings; every question and answer is still computed, so the key stays correct.

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Unit test: 20 questions, easy to hard, 2 points each, roomy spacing. Keeps your selected skills.

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Missing side from the perimeter

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1. Perimeter of polygons

Planned: 12 / 60 questions

12 questionsSign in to download PDFsSettings
Name ______________________Date ____________Score ____ / 12

Perimeter of polygons practice

Perimeter of polygons · 1–12

Find the perimeter or the missing side.

Hard
1.The perimeter is 72 cm. Find the missing side length.10 cm12 cm14 cm5 cm16 cm?
Hard
2.The perimeter is 27 cm. Find the missing side length.11 cm3 cm?
Hard
3.The perimeter is 44 cm. Find the missing side length.18 cm5 cm4 cm12 cm?
Hard
4.The perimeter is 30 cm. Find the missing side length.9 cm8 cm?
Hard
5.The perimeter is 51 cm. Find the missing side length.17 cm12 cm18 cm?
Hard
6.The perimeter is 38 cm. Find the missing side length.2 cm18 cm?
Hard
7.The perimeter is 26 cm. Find the missing side length.11 cm12 cm?
Hard
8.The perimeter is 52 cm. Find the missing side length.20 cm15 cm?
Hard
9.The perimeter is 88 cm. Find the missing side length.19 cm11 cm18 cm17 cm9 cm?
Hard
10.The perimeter is 69 cm. Find the missing side length.3 cm10 cm20 cm10 cm15 cm?
Hard
11.The perimeter is 43 cm. Find the missing side length.13 cm15 cm?
Hard
12.The perimeter is 44 cm. Find the missing side length.7 cm11 cm6 cm?

Answer key — Perimeter of polygons practice

Perimeter of polygons

1.15 cm
2.13 cm
3.5 cm
4.13 cm
5.4 cm
6.18 cm
7.3 cm
8.17 cm
9.14 cm
10.11 cm
11.15 cm
12.20 cm

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