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Unit Plan
Khan Academy

Khan Academy: Estimate to Add and Subtract Multi Digit Whole Numbers

For Students 1st - 3rd Standards
Use estimation to find a reasonable solution to multi-digit addition and subtraction problems. Numbers are less than or equal to 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
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Unit Plan
Khan Academy

Khan Academy: Multi Digit Addition

For Students 3rd - 5th Standards
Add whole numbers with sums less than 1,000,000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Interactive
Doina Popovici

Math Play: Multi Digit Addition Basketball Game

For Students 1st - 3rd
Have fun adding multi-digit numbers with this interactive basketball game.
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Unknown Type
Math Drills

Math Drills: Addition Worksheets

For Students 1st - 5th
Download these worksheets to sharpen your addition skills. Sheets focus on single and multi-digit addition, addition table, column addition, and adding doubles of numbers.
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Professional Doc
Louisiana Department of Education

Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Multi Digit Whole Number and Decimal Fraction Operations

For Students 5th
A guide to support parents as they work with their students with multi-digit whole number and decimal fraction operations.
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Activity
NumberNut

Number Nut: Addition: Adding Three Digit Numbers

For Students 3rd - 5th Standards
Explains how to add three-digit numbers by focusing on each column of digits as you add.
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Unknown Type
Illustrative Mathematics

Illustrative Mathematics: 4.nbt Ordering 4 Digit Numbers

For Teachers 3rd - 5th Standards
It is common for students to compare multi-digit numbers just by comparing the first digit, then the second digit, and so on. This task includes three-digit numbers with large hundreds digits and four-digit numbers with small thousands...
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 2.nbt Many Ways to Do Addition 2

For Teachers 2nd Standards
This lesson plan has students exploring was to add and subtract numbers with multi-digits and place value.
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Unknown Type
Varsity Tutors

Varsity Tutors: Aplusmath: Addition Worksheets

For Students 1st - 8th Standards
Create customized addition worksheets. Choose from basic facts to four-digit by four-digit questions. The size of problem set can be selected, as well as whether the format will be vertical or horizontal. An answer key can also be...
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Interactive
AAA Math

Aaa Math: Adding Five Digit Numbers

For Students 3rd - 5th
AAAMath.com provides an online game to practice addition with five digit numbers. The game will give you addition problems and keep track of your correct and incorrect answers. It will also give you a percent score for the correct answers!
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Unknown Type
Other

Project Happy Child: Free Addition Worksheets

For Students Pre-K - 1st Standards
2000 basic addition worksheets are available at this web site. They can be printed and used for a variety of practice purposes. Some helpful hints are included to avoid mindless practice that could quickly become counter productive.
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Interactive
AAA Math

Aaa Math: Vertical Addition

For Students 1st - 5th
See examples of addition problems that are arranged vertically. There is also a game that allows you to practice your addition skills. The game keeps track of your correct and incorrect answers, it also gives a percentage score of your...
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Activity
NumberNut

Number Nut: Addition: Adding Two Digit Numbers

For Students 3rd - 5th Standards
Explains how to add two-digit numbers by focusing on each column of digits as you add, rather than the entire numbers.
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Handout
AAA Math

Aaa Math: Multiplication of Two and Three Digit Numbers

For Students 3rd - 8th Standards
Explains the traditional way to multiply three-digit by two-digit numbers. Gives practice and games to practice this skill.
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Activity
Scholastic

Scholastic: Max's Math Adventures: Good Bye Training Wheels!

For Teachers 3rd - 5th
Take a bike ride with Max and add up the miles he has traveled. Use the teacher's guide, activity sheet, and extra challenges to create an engaging learning experience!
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Interactive
AAA Math

Aaa Math: Adding Six Digit Numbers

For Students 3rd - 5th
This lesson has a game and explanation of addition with six digit numbers. The game will keep running totals of your correct and incorrect answers. It will also give a percent score of the correct answers for you to see.
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Interactive
AAA Math

Aaa Math: Adding Seven Digit Numbers

For Students 3rd - 5th
This lesson is provided for by J. Banfill at AAAMath.com. Look over an example of adding seven digit numbers and then play this online game for practice. The game will keep track of your correct and incorrect answers, as well as give you...
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Activity
NumberNut

Number Nut: More Than Two Addends

For Students 3rd - 5th
Develop strategies for adding more than two addends with this quick addition lesson. Examine how grouping numbers can help make adding multiple numbers easier. Then, practice your new skills using the related interactive games that are...
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Interactive
Quia

Quia: Add Your Way to a Million (Rags to Riches)

For Students 1st - 5th Standards
You can earn a million bucks playing this addition game. A succinct multiple choice game with hints, if you need them. Contains simple computation problems mixed with a few word problems. Must be able to add up to the millions place (one...
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Activity
NumberNut

Number Nut: Addition: More Than Two Addends

For Students 3rd - 5th
Explains how to add three or more multi-digit numbers.
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Unknown Type
Varsity Tutors

Varsity Tutors: Aplusmath: Decimal Subtraction Worksheets

For Students 4th - 8th
Create customized decimal subtraction worksheets. Choose from basic facts to four-digit by four-digit questions. The size of problem set can be selected, as well as whether the format will be vertical or horizontal. An answer key can...
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Activity
University of Cambridge

University of Cambridge: Nrich: Super Value Codes

For Students Pre-K - 1st Standards
On this one page website sharpen your logic and addition skills while working on this challenge. The solution is available to double check your solution.
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Mixed Operations Selecting the Incorrect Sentence

For Students 3rd - 5th
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a series of multi-operation problems with addition and subtraction of three-digit numbers to determine which does not match the...
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Interactive
CK-12 Foundation

Ck 12: Math Grade 3

For Students 3rd
Browse resources related to third-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.

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