Rounding Rockets: Blast Off to the Nearest Hundred and Thousand!

Mathematics Grades 3rd Grade 5:40 Video
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Lesson Description

Learn to round numbers to the nearest 100 and 1000 using place value! This lesson will help you estimate and solve problems more easily.

Video Resource

Rounding 2: Hundreds and Thousands - OLD Math: Level D for Kids!

Miacademy Learning Channel

Duration: 5:40
Watch on YouTube

Key Concepts

  • Place value (hundreds, thousands)
  • Rounding rules (rounding up, rounding down)
  • Estimation

Learning Objectives

  • Students will be able to round numbers to the nearest 100.
  • Students will be able to round numbers to the nearest 1000.
  • Students will be able to apply rounding to estimate solutions to addition problems.

Educator Instructions

  • Introduction (5 mins)
    Begin by reviewing the concept of place value. Ask students to identify the hundreds and thousands places in different numbers. Briefly review the concept of rounding to the nearest ten as a warmup.
  • Video Viewing (7 mins)
    Watch the Miacademy Learning Channel video 'Rounding 2: Hundreds and Thousands - OLD Math: Level D for Kids!'. Encourage students to take notes on the rounding rules presented.
  • Guided Practice (10 mins)
    Work through examples of rounding to the nearest 100 and 1000. Use a place value chart to visually demonstrate the process. Have students participate actively by identifying the digit to the right and applying the rounding rules.
  • Real-World Application (8 mins)
    Present word problems that require rounding to estimate. For example, use the marble example from the video or create similar scenarios. Discuss how rounding makes it easier to estimate and check if an answer is reasonable.
  • Independent Practice (10 mins)
    Provide students with a worksheet or online activity where they can practice rounding to the nearest 100 and 1000 independently. Include both straightforward rounding problems and word problems.

Interactive Exercises

  • Number Line Rounding
    Create a number line from 100 to 200 (or 1000 to 1100) on the board. Call out numbers and have students identify where they fall on the number line and which hundred (or thousand) they are closest to.
  • Rounding Game
    Divide the class into teams. Call out a number and a rounding place (nearest 100 or 1000). The first team to correctly round the number gets a point.

Discussion Questions

  • Why is it important to know how to round numbers?
  • How does place value help us when we are rounding?
  • Can you think of a time when you might use rounding in real life?

Skills Developed

  • Rounding skills
  • Estimation
  • Problem-solving

Multiple Choice Questions

Question 1:

What number is 349 rounded to the nearest hundred?

Correct Answer: 300

Question 2:

What number is 1,782 rounded to the nearest thousand?

Correct Answer: 2,000

Question 3:

Which digit do you look at when rounding to the nearest hundred?

Correct Answer: Tens

Question 4:

If the digit to the right is 5 or more, do you round up or down?

Correct Answer: Up

Question 5:

Estimate: What is 467 + 321 rounded to the nearest hundred?

Correct Answer: 800

Question 6:

6,238 rounded to the nearest thousand is?

Correct Answer: 6,000

Question 7:

150 rounded to the nearest hundred is?

Correct Answer: 200

Question 8:

Is 3,500 rounded to the nearest thousand, rounded up or down?

Correct Answer: Up

Question 9:

If you want to estimate how many apples you have in 20 bags with 24 apples in each bag, should you round 24 to 20 or 30?

Correct Answer: 20

Question 10:

Why would we round numbers?

Correct Answer: To make them easier to work with

Fill in the Blank Questions

Question 1:

When rounding to the nearest hundred, look at the digit in the ______ place.

Correct Answer: tens

Question 2:

If the digit to the right is 4 or less, you round ______.

Correct Answer: down

Question 3:

The number 8,529 rounded to the nearest thousand is ______.

Correct Answer: 9000

Question 4:

Rounding helps us to make an ______.

Correct Answer: estimate

Question 5:

549 rounded to the nearest hundred is ______.

Correct Answer: 500

Question 6:

7,621 rounded to the nearest thousand is ______

Correct Answer: 8000

Question 7:

We use place ______ to help us round.

Correct Answer: value

Question 8:

When estimating the answer of 345+230, to the nearest hundred, the estimated answer is _____

Correct Answer: 500

Question 9:

When rounding to the nearest thousand, all the digits to the right of the thousands place become _______.

Correct Answer: zero

Question 10:

3,999 rounded to the nearest thousand is _______

Correct Answer: 4000

Educational Standards

3.N.1.5:Use place value understanding to round numbers to the nearest thousand, ten-thousand and hundred thousand. 3.N.2.4:Recognize when to round numbers and apply understanding to estimate sums and differences to the nearest ten thousand, thousand, hundred, and ten.

Teaching Materials

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