Third Grade Multi-Digit Addition
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Subject Area: Mathematics (B.E.S.T.) | Grade Level: 3
Lesson Length: 30 minutes
Keywords/Tags: Addition, Borrowing, Stacked Algorithm
Lesson Description: In this lesson, students will learn how to add multi-digit numbers using the stacked algorithm.

  • MA.3.NSO.2.1 Add and subtract multi-digit whole numbers including using a standard algorithm with procedural fluency.
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Video : Multi-Digit Addition Using the Stacked Algorithm
Instructions: Please watch the following video as many times as needed before starting to go through other lesson pages. Understanding the content of the video is very important since the lesson activities will be all about this video content.
Description: Learn how to add multi-digit numbers with Math Antics.
Quiz : Multi-Digit Addition Quiz
Instructions: Please complete this quiz by choosing the correct answer for each question. You can take this quiz as many times needed.
Question #1

Solve: 215 + 32 = ?

Question #2

Solve: 1,850 + 354 = ?

Question #3
True or False: 145 + 809 + 77 = 1,031
Question #4

Solve: 139 + 285 = ?

Question #5
If there is a two-digit number when adding in one column, the first digit needs to be carried to the next column.
Question #6
In the number, 1,320, the 1 is in the hundreds place.
Question #7

Which number shows a '2' in the tens place?

Question #8
What is 557 + 893?
Question #9
Does 244 + 204 = 408?
Question #10
What is 809 + 819?
Description: You have 10 questions in relation to the previous video you watched.
Resources : Multi-Digit Addition Worksheet
Instructions: Please see additional external resources below. Feel free visit each link to learn more about this lesson. https://www.tlsbooks.com/pdf/addition-9.pdf
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Description: Printable Worksheet for extra practice.
Resources : Adding 3-Digit Numbers Online Game
Instructions: Please see additional external resources below. Feel free visit each link to learn more about this lesson. https://www.iknowit.com/lessons/c-adding-3-digit-numbers.html
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Description: Online game for three-digit addition practice.
Resources : Adding Three Digit Numbers Online
Instructions: Please see additional external resources below. Feel free visit each link to learn more about this lesson. https://mrnussbaum.com/adding-three-digit-numbers-online
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Description: Allows students to practice their math skills.
Resources : Adding 3-Digit Numbers Online Game
Instructions: Please see additional external resources below. Feel free visit each link to learn more about this lesson. https://www.mathgames.com/skill/3.27-add-two-numbers-up-to-1000
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Description: Add two numbers up to 1000!