# Lesson 6: Rounding to Thousandths

## Activities

### Activity 1: Rounding Numbers

Materials: Interactive Notebook

As you work with rounding decimal numbers, keep in mind that the process is the same for whole numbers and decimals numbers. Watch the following video to review these steps. While the video discusses rounding decimals to the ten-thousandths place, you'll only be rounding numbers as far as the thousandths place. Be sure to pay close attention to what it means to round to the "nearest whole number."

After you've watched the video, fill in the "Rounding Numbers" sheet. You can re-watch and pause the video as needed. When you are done with the sheet, you can place it in your Interactive Notebook for future reference.

After you've watched the video, fill in the "Rounding Numbers" sheet. You can re-watch and pause the video as needed. When you are done with the sheet, you can place it in your Interactive Notebook for future reference.

Student Activity Page

Next, use the Rounding Numbers Calculator at the following web link to check your answers at the bottom of the "Rounding Numbers" activity page. Enter the numbers and places in the boxes provided and then click on "Calculate" to check your answer. Correct any wrong answers.

Web Link

Rounding Numbers Calculator

Note that the answer will appear on the left, right under the calculator.

This link was verified on 12/1/2023.

In this activity, your child watched a video about rounding numbers, including rounding decimal numbers. Then she practiced rounding numbers to different places. The answer key provides the correct responses for the top half of the page; for the bottom of the page, your child checked her work with an online tool. She should store this page in her Interactive Notebook for future reference.

#### Answer Key:

- Look at the digit to the
__right__of the target number. If the number is 0, 1, 2, 3, or 4, the target number__stays the same__. This is called rounding__down__. If the number is 5, 6, 7, 8, or 9, the target number__goes up by 1__. This is called rounding__up__. - If the target number is 9 and needs to be rounded up, the target number changes to
__0__, and the digit to the__left__will__increase__by 1. - If the directions say, "Round to the nearest whole number," you should round to the
__ones__place. - If the directions say, "Round to the greatest place," you should round to the
__highest place value showing__.

### Activity 2: Quiz

Before taking the quiz, watch the music video at the following web link. It reviews rounding decimals.

Next, you will complete the "Unit 1 Quiz 2" page. Use scratch paper as needed. Give the page to a parent to check when you have finished.

Student Activity Page

Once your child completes the "Unit 1, Quiz 2" page, check her answers. Allow her to correct any mistakes and encourage her to rewatch the videos from this lesson as needed.

"Unit 1, Quiz 2" Answer Key, Part 1

#### Answer Key (Part 2):

- The following are true:

1.320 = 1.32

12.155 > 12.105

0.568 < 0.658 - Round the following numbers to the given places.

4.539, tenths place (4.5)

5,624.99, thousands place (6,000)

3.852, hundredths place (3.85)

215.138, hundredths place (215.14)

43.158, the nearest whole number (43)