Khan Academy
Khan Academy: Add and Subtract Mixed Numbers (With Regrouping)
Practice adding and subtracting mixed numbers with common (like) denominators. Items require regrouping (borrowing).
CK-12 Foundation
Ck 12: Elem Math: Adding Two Digit Numbers With Regrouping
[Free Registration/Login may be required to access all resource tools.] The video models how to add two-digit numbers using regrouping. The video is followed by practice problems.
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...
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!
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.
Khan Academy
Khan Academy: Add & Subtract Mixed Numbers With Unlike Denominators (Regrouping)
Practice adding and subtracting mixed numbers with different denominators. Regrouping required.
Cool Math
Coolmath: Coolmath4kids: Adding Numbers Within 1000
Step-by-step tutorial showing how to add 3-digit numbers in place value columns with and without regrouping. CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers With Unlike Denominators 2
Practice adding and subtracting mixed numbers with different denominators. Regrouping required. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
ClassFlow
Class Flow: Adding Larger Numbers
[Free Registration/Login Required] This is a flipchart to introduce adding two-digit numbers with regrouping. Applicable for grades 2 and 3.
Khan Academy
Khan Academy: Add/ Subtract Mixed Numbers W Unlike Denominators (No Regrouping)
Practice adding and subtracting mixed numbers with different denominators. No regrouping required.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers With Unlike Denominators 1
Practice adding and subtracting mixed numbers with different denominators. No regrouping required. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers (No Regrouping)
Practice adding and subtracting mixed numbers with common (like) denominators.
University of Cambridge
University of Cambridge: Nrich: Adding Plus
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.
AAA Math
Aaa Math: Adding Three Numbers
Find an explanation on how to add three numbers together using pencil and paper. There is also an online game that will keep running totals of your correct and incorrect answers. The lesson also gives you a percent score of the correct...
ClassFlow
Class Flow: This Doesn't Add Up!
[Free Registration/Login Required] This flipchart teaches the steps in adding 2 or more digits with regrouping and gives students practice problems.
Khan Academy
Khan Academy: Add and Subtract Mixed Numbers (No Regrouping)
Practice adding and subtracting mixed numbers with common (like) denominators. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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...
Teaching Treasures Publications
Teaching Treasures: Year Four Timed Mental Math (Page 2)
Improve your computations skills in all four operations with this timed interactive worksheet. Solve ten problems in five minutes or less. Problems are presented in horizontal format and answers can be checked immediately. This worksheet...
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.
Teaching Treasures Publications
Teaching Treasures: Year Four Math (Page 1)
This interactive worksheet combines all four operations. The focus is on addition and subtraction fact through one hundred and basic multiplication and division facts. This easy to navigate activity offers learners immediate feedback and...
University of Cambridge
University of Cambridge: Nrich: Ladybugs in the Garden
On this one page website sharpen your logic and addition facts skills while working on this challenge. The solution is available to double check your solution.
University of Cambridge
University of Cambridge: Nrich: Make 37
Sharpen your logic and addition skills while working on this challenge. Solution.
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...
Quia
Quia: Adding to 10
This website for young children gives them practice adding sums to 10. Problems are presented as teddy bears to add up with the corresponding digits that represent the problem symbolically.