# Lesson 4 Compare and Order Decimals

Let’s put some decimals in order.

## Warm-up Estimation Exploration

The person in the image is 1.7 meters tall.

Estimate the wingspan of the eagle in meters.

Record an estimate that is:

too low | about right | too high |
---|---|---|

## Activity 1 All in Order

Order the numbers from least to greatest. Use the number line if it is helpful.

Order the numbers from greatest to least. Use the number line if it is helpful.

## Activity 2 400-Meter Dash in a Flash

The table shows eight of the top runners in the Women’s 400-Meter event. Their best running times, listed here, put the runners in the world’s top 25 for this event.

The names in the table are arranged by the runners’ best time. The fastest runner is at the top.

48.37

49.3

48.7

49.26

49.07

49.28

48.83

49.05

Put the times in order, from least to greatest, to match the times with the runners.

runner

best time (seconds)

year achieved

Shaunea Miller-Uibo (Bahamas)

2019

Sanya Richards (U.S.A.)

2006

Valerie Brisco-Hooks (U.S.A.)

1984

Chandra Cheesborough (U.S.A.)

1984

Tonique Williams-Darling (Bahamas)

2004

Allyson Felix (U.S.A.)

2015

Pauline Davis (Bahamas)

1996

Lorraine Fenton (Jamaica)

2002

How many seconds did it take Sanya Richards to run 400 meters?

What is Allyson Felix’s best time?

## Practice Problem

## Problem 1

Order the numbers from least to greatest: