# Lesson 12 Partition Rectangles Into Squares

• Let’s partition rectangles into squares.

## Warm-up Estimation Exploration: Fill it Up

How many little squares would fill the rectangle?

Record an estimate that is:

too low

too high

## Problem 1

Build a rectangle with 8 tiles arranged in 2 rows. Use a ruler to partition the rectangle to match the rectangle you made.

## Problem 2

1. Use a ruler to partition the rectangle using the tick marks as a guide.

2. How many rows of equal-size squares did you make?

3. How many columns did you make?

4. Write 2 equations to represent the total number of equal-size squares.

## Problem 3

1. Use a ruler to partition the rectangle using the tick marks as a guide.

2. How many rows of equal-size squares did you make?

3. How many columns did you make?

4. Write 2 equations to represent the total number of equal-size squares.

## Problem 1

1. Use 12 tiles to make a rectangle. Split one of the rectangles into equal-size squares to match your rectangle made of tiles.

2. Write 2 equations to represent the total number of squares.

## Problem 2

Split this rectangle into equal-size squares.

1. Write 2 equations to represent the total number of squares.

## Problem 3

1. Split this rectangle into equal-size squares.

2. Write 2 equations to represent the total number of squares.

## Problem 1

1. Split the rectangle into equal-size squares.

2. Write 2 equations that represent the number of squares in the array.