Illustrative Mathematics
Illustrative Mathematics: 4.nbt Ordering 4 Digit Numbers
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...
Khan Academy
Khan Academy: Multi Digit Addition
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.
Khan Academy
Khan Academy: Estimate to Add and Subtract Multi Digit Whole Numbers
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...
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Multi Digit Whole Number and Decimal Fraction Operations
A guide to support parents as they work with their students with multi-digit whole number and decimal fraction operations.
Doina Popovici
Math Play: Multi Digit Addition Basketball Game
Have fun adding multi-digit numbers with this interactive basketball game.
AAA Math
Aaa Math: Adding Six Digit Numbers
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.
AAA Math
Aaa Math: Adding Seven Digit Numbers
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...
Math Drills
Math Drills: Addition Worksheets
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.
NumberNut
Number Nut: Addition: Adding Two Digit Numbers
Explains how to add two-digit numbers by focusing on each column of digits as you add, rather than the entire numbers.
NumberNut
Number Nut: Addition: Adding Three Digit Numbers
Explains how to add three-digit numbers by focusing on each column of digits as you add.
Varsity Tutors
Varsity Tutors: Aplusmath: Addition Worksheets
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...
AAA Math
Aaa Math: Adding Five Digit Numbers
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!
Illustrative Mathematics
Illustrative Mathematics: 2.nbt Many Ways to Do Addition 2
This lesson plan has students exploring was to add and subtract numbers with multi-digits and place value.
NumberNut
Number Nut: Addition: More Than Two Addends
Explains how to add three or more multi-digit numbers.
Other
Project Happy Child: Free Addition Worksheets
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.
AAA Math
Aaa Math: Vertical Addition
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...
AAA Math
Aaa Math: Multiplication of Two and Three Digit Numbers
Explains the traditional way to multiply three-digit by two-digit numbers. Gives practice and games to practice this skill.
Scholastic
Scholastic: Max's Math Adventures: Good Bye Training Wheels!
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!
University of Cambridge
University of Cambridge: Nrich: Super Value Codes
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.
CK-12 Foundation
Ck 12: Math Grade 3
Browse resources related to third-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.
CK-12 Foundation
Ck 12: Elem Math: Adding, Subtracting, and Multiplying With Parentheses
[Free Registration/Login may be required to access all resource tools.] A learning module where students apply the order of operations to solve equations involving addition, subtraction, and multiplication of multi-digit numbers, as well...
Illustrative Mathematics
Illustrative Mathematics: 4.nbt What's My Number?
The purpose of this task is for students to reason about base-ten numbers on the number line in a way that will require them to use what they know about place value. Students first represent addition and subtraction on the number line in...
NumberNut
Number Nut: More Than Two Addends
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...
Varsity Tutors
Varsity Tutors: Aplusmath: Decimal Subtraction Worksheets
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...