Perimeter and Area Basics — Flashcards

Grade 2 · Math · Flashcards

Master perimeter and area vocabulary and formulas with these 2nd grade flashcards.

Flashcards

What is perimeter?: The total distance around the outside of a shape
What is area?: The space inside a shape, measured in square units
How to find perimeter of a rectangle: Add all 4 sides: L + W + L + W
How to find area of a rectangle: Length × Width
Units for perimeter: Regular linear units: cm, inches, meters
Units for area: Square units: cm², sq. inches, sq. meters
Perimeter of a square with side 6 cm: 4 × 6 = 24 cm
Area of a 3×5 rectangle: 3 × 5 = 15 square units
What does perimeter help us measure in real life?: Fencing a yard, putting trim around a room
What does area help us measure in real life?: Carpet for a floor, tiles for a wall, sod for a lawn
Is perimeter measured in square units?: No — only area is in square units; perimeter uses regular units
Perimeter of a triangle with sides 3, 4, and 5: 3 + 4 + 5 = 12 units