FastChomp
Practice · Learn · Achieve

Florida Grade 2 Math · Geometric Reasoning

MA.2.GR.2.1: Exploring Perimeter

What this Grade 2 benchmark means, worked examples, common mistakes, and a free printable worksheet.

Created by a Florida mom · Published by Tropical Learning LLC

Download Free Worksheet (PDF)See worked examples

What Is Benchmark MA.2.GR.2.1?

Perimeter is the distance around a figure. Students explore it by placing unit segments along the edge of a figure, with no gaps or overlaps, and counting them.

They find the perimeter of rectangles, like picture frames or desktops, by counting unit segments on grid paper.

Official benchmarkExplore perimeter as an attribute of a figure by placing unit segments along the boundary without gaps or overlaps. Find perimeters of rectangles by counting unit segments.

How it is tested: Grade 2 students take FAST Star Math, Florida's math test for Kindergarten through Grade 2.

Worked Examples

Worked Example 1

Counting Unit Segments

A rectangle on grid paper is 5 units long and 3 units wide. How many unit segments go around it?
  1. 1Count each side: 5 along the top, 3 down one side, 5 along the bottom, 3 up the other side.
  2. 25 + 3 + 5 + 3 = 16
Answer: 16 units

Worked Example 2

A Picture Frame

A picture frame drawn on grid paper is 4 units long and 2 units tall. What is its perimeter?
  1. 1Count around all four sides: 4 + 2 + 4 + 2 = 12
Answer: 12 units

Common Mistakes to Watch For

Counting the squares inside

Wrong:A 5 by 3 rectangle has a perimeter of 15.

15 is the number of squares inside. Perimeter counts the unit segments around the edge: 16 units.

Counting only two sides

Wrong:5 + 3 = 8 units

Perimeter goes all the way around. Count all four sides: 5 + 3 + 5 + 3 = 16 units.

Helpful Math Tip

Walk around the edge of a rug or table with your finger (or your feet!) and count the steps. That is the idea of perimeter.

Related Grade 2 Skills

MA.2.GR.2.2

Perimeter of Polygons

MA.2.M.1.1

Measuring Length

Make Florida Math Practice More Fun

Help your child build math confidence with original interactive questions aligned with Florida's B.E.S.T. Mathematics Standards.

Start Practicing Free

Independent Educational Platform. FastChomp is published by Tropical Learning LLC and is not affiliated with, sponsored by, or endorsed by the Florida Department of Education. FAST and Star assessment names are referenced for informational purposes only. FastChomp practice questions are original educational materials, not official Florida FAST assessment questions.