School Express
School Express: Online Addition
Great place to sharpen your addition skills. Start with basic facts and go all the way up to 3 digit addition with regrouping. You select the level of difficulty and the number of problems. You can also check your answer right away.
CK-12 Foundation
Ck 12: Elem Math: Overview of Subtraction Numbers to 100
[Free Registration/Login may be required to access all resource tools.] The video explains two, two-digit subtraction problems one with regrouping and the other without regrouping.
Mr. Martini's Classroom
Mr. Martini's Classroom: Adding With Multiple Choice Answers
Practice addition facts 4 to 9 with this interactive multiple choice activity.
Cool Math
Coolmath: Coolmath4kids: Adding Numbers Within 100 With Regrouping
Demonstrates how to regroup when adding 2-digit numbers.
Quia
Quia: Addition Level 1
Students can practice addition facts using the interactive matching games on this site.
Other
Saskatoon Public Schools: Mental Math Strategies
Strategies for basic addition and multiplication are explained here and there are several practice worksheets that can be downloaded.
Mr. Martini's Classroom
Mr. Martini's Classroom: Mr. Martini's Classroom: Adding Objects
Practice addition facts 1 to 9 with numbers and pictures in this interactive game.
Mr. Martini's Classroom
Mr. Martini's Classroom: Counting by 5's
Practice counting by 5's and change the value to count higher or lower. Press "How to do this" for further instructions.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Addition Quiz
Assess knowledge of addition facts from 1 to 9 with this interactive quiz. Click check my answers and do it again, to verify answers and continue practice.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Adding Up to 3
Practice addition facts up to three with this interactive exercise.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Adding Up to 4
Practice addition facts up to four with this interactive exercise.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Adding Up to 6
Practice addition facts up to six with this interactive exercise.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Adding Up to 7
Practice addition facts up to 7 in this interactive exercise.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Adding Up to 8
Practice addition facts up to 8 with this interactive exercise.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Subtract Up to 9
Practice subtraction facts up to nine with this interactive exercise.
Mr. Martini's Classroom
Mr. Martini's Classroom: Kids' Subtract Up to 4
Practice subtraction facts up to four using this interactive exercise.
Mr. Martini's Classroom
Mr. Martini's Classroom: Subtracting With Multiple Choices Math Facts
Practice subtraction facts 4 to 9 with this interactive multiple choice activity.
Mangahigh
Mangahigh: Number: Number Partners Up to 20
Students explore the concept of number partners by working through an online tutorial and then attempting a ten question quiz that increases in difficulty as questions are answered correctly.
Mangahigh
Mangahigh: Number: Number Pairs Up to 100
Students explore the concept of number pairs by working through an online tutorial and then attempting a ten question quiz that increases in difficulty as questions are answered correctly.
Mangahigh
Mangahigh: Number: Mental Addition and Subtraction of Large Numbers
This site provides students practice with the concept of mental addition. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to practice the skill.
Cool Math
Coolmath: Coolmath4kids: Subtracting Numbers Within 100
Short tutorial showing how to subtract using two-digit numbers in tens and ones columns without regrouping.
National Institute of Educational Technologies and Teacher Training (Spain)
Ministerio De Educacion: La Triada (Suma)
This is a game about addition of numbers from 1 to 9. A group of two players are needed for this game.
Beacon Learning Center
Beacon Learning Center: Circus Fun
Students can practice adding up to three whole numbers with regrouping in this interactive web lesson.
![K 5 Math Teaching Resources: 2 Digit Addition Split [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "K 5 Math Teaching Resources: 2 Digit Addition Split [Pdf] Activity")
K-5 Math Teaching Resources
K 5 Math Teaching Resources: 2 Digit Addition Split [Pdf]
Students will decompose double digit numbers to add numbers together.