Handout
Cool Math

Coolmath: Coolmath4kids: Adding Numbers Within 100 With Regrouping

For Students 2nd Standards
Demonstrates how to regroup when adding 2-digit numbers.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Adding Two Digit Numbers With Regrouping

For Students 2nd - 4th
[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.
Interactive
AAA Math

Aaa Math: Adding Two Digit Numbers

For Students K - 1st Standards
This lesson has an explanation for adding two-digit numbers using paper and pencil. There is also a game to practice your skills. The game gives you a percent score of your correct answers, as well as running totals of your correct and...
Interactive
AAA Math

Aaa Math: Adding Two Digit Numbers Mentally

For Students K - 1st Standards
Read these two strategies for adding two-digit numbers in your head. Then try out the one you like better by playing the game. Running totals of your correct and incorrect answers as well as a percent score of your correct answers will...
Whiteboard
ClassFlow

Class Flow: Two Digit Addition With Regrouping

For Teachers Pre-K - 1st Standards
[Free Registration/Login Required] This flipchart will help the second grade student review three digit place value and comparing numbers. It has a helpful work mat for teaching two digit addition with regrouping. Students will learn how...
Lesson Plan
Other

Nearpod: Adding Within 100

For Teachers 1st - 2nd Standards
In this lesson on addition within 100, students will learn how to compose numbers and will explore strategies to add double-digit numbers such as vertical addition, regrouping, using multiples of 10, and labeling an open number line.
Activity
Lizard Point Quizzes

Lizard Point: Addition Practice

For Students Pre-K - 1st Standards
Practice several different levels of difficulty of addition problems from single digit all the way up to 3 digit with regrouping. You can also choose single digit addition with negative numbers. When you are finished you can print your...
Unit Plan
Cool Math

Coolmath: Coolmath4kids: Adding Numbers Within 1000

For Students 3rd - 4th Standards
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
Handout
Cool Math

Coolmath: Coolmath4kids: Adding Numbers Within 100

For Students 2nd - 3rd Standards
A step-by-step tutorial showing how to add 2-digit numbers in place value columns without regrouping. Includes exercises to try. CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000
Interactive
AAA Math

Aaa Math: Adding Three Digit Numbers

For Students 2nd - 5th Standards
Read through this explanation of how to add three digit numbers. Use the online game to practice this skill. The game will keep running totals of your correct and incorrect answers. It will also show you a percent score of the correct...
Unit Plan
Khan Academy

Khan Academy: Add 2 Digit Numbers (No Regrouping)

For Students K - 1st Standards
Practice solving problems like 24 + 45. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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...
Activity
Teaching Treasures Publications

Teaching Treasures: Year Three Math (Page 1)

For Students Pre-K - 1st Standards
Sharpen your mathematical skills with this interactive worksheet that combines two-digit addition, two-digit subtraction, and basic multiplication facts. This activity is easy to grasp and gives learners immediate feedback to their...
Unit Plan
Khan Academy

Khan Academy: Add 2 and 3 Digit Numbers (No Regrouping)

For Students 1st - 3rd Standards
Practice solving problems like 243 + 452. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unknown Type
Khan Academy

Khan Academy: Regrouping When Adding One Digit Numbers

For Students Pre-K - 1st Standards
In this exercise, students practice regrouping when adding one-digit numbers. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Unit Plan
Khan Academy

Khan Academy: Regroup When Adding 1 Digit Numbers

For Students K - 1st
Practice adding numbers like 45+8. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unknown Type
Khan Academy

Khan Academy: Adding 1s or 10s (No Regrouping)

For Students Pre-K - 1st Standards
In this exercise, students practice adding 1s or 10s (no regrouping). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Activity
NumberNut

Number Nut: Addition: 3 Digit Numbers

For Students 3rd - 8th
Three digit addition requires working from left to right and may require carrying. Follow the steps in the examples and then practice the skills with the two interactive activities.
Whiteboard
ClassFlow

Class Flow: Adding Larger Numbers

For Teachers Pre-K - 1st Standards
[Free Registration/Login Required] This is a flipchart to introduce adding two-digit numbers with regrouping. Applicable for grades 2 and 3.
Activity
Teaching Treasures Publications

Teaching Treasures: Year Three Math (Page 5)

For Students 3rd - 6th Standards
Sharpen your computation skills with two-digit addition, two-digit subtraction, and one-digit multiplication facts using this interactive worksheet. Learners must be familiar with multiplication facts through twelve to be successful....
Unit Plan
Khan Academy

Khan Academy: Add 1s or 10s (No Regrouping)

For Students K - 1st
Practice solving problems like 34+5 and 34+50. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Activity
Teaching Treasures Publications

Teaching Treasures: Year Four Timed Mental Math (Page 2)

For Students 3rd - 5th Standards
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...