Grade 3 · Geometry & measurement

Perimeter practice

Perimeter is a grade 3 math skill aligned to Common Core standard 3.MD.D.8: solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths. Below are 8 practice questions with answers and step-by-step explanations, drawn from the 36 perimeter problems our math games drill.

CCSS 3.MD.D.836 questions in the bank
Sample questions

Try 8 for free

Question 1easy

Perimeter of a 44 ft by 77 ft rectangle?

2(4+7)=222(4+7)=22 ft.

Question 2easy

A square has side 88 m. Perimeter?

4×8=324 \times 8 = 32 m.

Question 3easy

Perimeter of a 1010 cm by 33 cm rectangle?

2(10+3)=262(10+3)=26 cm.

Question 4easy

A square has sides of 22 ft. What is its perimeter?

4×2=84 \times 2 = 8.

Question 5easy

What is the perimeter of a 33 cm by 22 cm rectangle?

2(3+2)=2×5=102(3 + 2) = 2 \times 5 = 10.

Question 6easy

A square has sides of 33 in. What is its perimeter?

4×3=124 \times 3 = 12.

Question 7easy

What is the perimeter of a 44 m by 33 m rectangle?

2(4+3)=2×7=142(4 + 3) = 2 \times 7 = 14.

Question 8easy

A square has sides of 44 cm. What is its perimeter?

4×4=164 \times 4 = 16.

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Math games for Grade 3

Questions like these are served inside our head-to-head math games.

Balloon Pop Math gameBalloon Pop MathPop balloons. Solve math. Win!Beam Team gameBeam TeamFly your saucer over the night farm and beam up a critter for every right answer — first to 12 wins.Blaster Gate gameBlaster GateBlast through the wall. First to clear wins.Blitz Tanks gameBlitz TanksSolve math to load shells. Out-think the battalion. Last math standing wins.
Tests that cover perimeter:
SBACStar MathACT AspireVTCAPSC READY
More Grade 3 skills:
Multi-digit addition with regroupingArea of rectanglesDivision factsMulti-digit subtraction with regroupingPicture and bar graphsMultiplication tablesProperties of operationsRoundingAll Grade 3 practice →

Drill it inside a game.

The free placement test finds your level, then every match serves perimeter questions at exactly the right difficulty.