# Lesson 8 Round Decimals

• Let’s round decimals to the nearest whole, tenth, and hundredth.

## Warm-up Estimation Exploration: Number Line

What number might be represented on the number line?

Record an estimate that is:

too low

too high

## Problem 1

Jada locates 15.53 on the number line. Do you think Jada accurately located the number?

## Problem 2

A number is located between two tick marks on each number line. Label those tick marks and then estimate the number.

## Activity 2 Which Number is Closest?

1. Round 6.273 to the nearest whole number, tenth, and hundredth. Use the number lines if they are helpful. Explain or show your reasoning.

2. Round 4.158 to the nearest whole number, tenth, and hundredth.

## Activity 3 Round the Numbers

Round each number to the nearest whole number, tenth, and hundredth.

nearest whole number

nearest tenth

nearest hundredth

34.482

99.909

5.555

19.509

## Problem 1

1. What is 0.374 rounded to the nearest hundredth? Explain or show your reasoning. Use the number line if it’s helpful.