# Lesson 4 Measure and Estimate in Centimeters

Let’s estimate and measure in centimeters.

## Warm-up Which One Doesn’t Belong: Length

Which one doesn’t belong?

## Activity 1 Estimate Length in Centimeters

Record an estimate that is:

too low

about right

too high

Record an estimate that is:

too low

about right

too high

Record an estimate for each object on the recording sheet.

Recording Sheet

object

estimate

measurement

**Choose an object:**Tell your partner why you think your estimates are “about right.”

## Activity 2 Measure and Compare

Measure each object on your recording sheet. Record each length in centimeters.

Compare your measurements to your estimates.

## Practice Problem

## Problem 1

Here is a rectangle.

Estimate how many centimeters long the rectangle is.

cm

Measure the rectangle and record the measurement.

cm

How does your estimate compare to the actual length?