Interactive
Mr. Martini's Classroom

Mr. Martini's Classroom: Mr. Martini's Classroom: Adding Objects

For Students Pre-K - 1st Standards
Practice addition facts 1 to 9 with numbers and pictures in this interactive game.
Activity
University of Cambridge

University of Cambridge: Nrich: Game Asteroid Blast

For Students Pre-K - 1st Standards
Use this game to improve your addition, subtraction, multiplication, and division basic facts. Practice all these skills and have fun at the same time! There is a "Get Printable Page," link at the top to print out the materials you need.
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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...
Interactive
Math Playground

Math Playground: Magic Triangle

For Students K - 1st
Practice your addition facts with this magic triangle online game.
Activity
Quia

Quia: Addition Matching Sums 10 to 18

For Students 3rd - 5th
This website for young children gives them practice adding sums from 10 to 18 in a matching type format.
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Quia

Quia: Addition Flashcards Sums 10 to 18

For Students 3rd - 5th
This website for young children gives them practice adding sums from 10 to 18 in a flashcard type format.
Interactive
Quia

Quia: Addition Concentration Sums 10 to 18

For Students K - 1st Standards
This website for young children gives them practice adding sums from 10 to 18 in a concentration game type format.
Interactive
Quia

Quia: Addition Matching Sums 0 to 9

For Students K - 1st Standards
This website for young children gives them practice adding sums from 0 to 9 in a matching type format.
Interactive
Quia

Quia: Addition Concentration Sums 0 to 9

For Students K - 1st Standards
This website for young children gives them practice adding sums from 0 to 9 in a concentration game type format.
Interactive
University of Cambridge

University of Cambridge: Nrich: Game Pass the Peas, Please

For Students Pre-K - 1st Standards
Use this game to improve your subtraction or addition skills. Gain skills in two areas at the same time! There is a "Get Printable Page," link at the top to print out materials you need. This game can also be altered to practice...
Activity
Other

Elementary Math Worksheets

For Students 3rd - 5th Standards
Print out different math practice sheets on the same topic as needed. A variety of practice sheets in the areas of addition, subtraction, multiplication and division are available.
Activity
Can Teach

Can Teach: Who Has More or Less?

For Teachers 2nd - 4th
Want to practice addition and subtraction skills in a new and exciting way? Use this online math lesson card game activity.
Interactive
ABCya

Ab Cya: Math Bingo

For Students 2nd - 4th
Test your math facts in addition, subtraction, multiplication, and division with this fun BINGO game. The lower your score the better in all three levels.
Interactive
Shodor Education Foundation

Shodor Interactivate: Arithmetic Four

For Students K - 1st Standards
You can challenge a friend to play this game to practice your arithmetic skills. Be ready because any kind of problem can pop up. You can adjust the problems to make them harder and also to give you less time.
Interactive
ICT Games

Ict Games: Funky Mummy

For Students 1st - 3rd Standards
Funky Mummy is a mobile-friendly number facts game. Play this game to practice quick recall of addition, subtraction and multiplication facts.
Activity
Cool Math

Coolmath: Coolmath4kids: Printable Flash Cards

For Students K - 1st
Find here flashcards for addition, subtraction, multiplication, and division for printing off and coloring.
Interactive
ABCya

Ab Cya: Math Lines

For Students Pre-K - 1st
A basic game for children to practice addition.
Unit Plan
Khan Academy

Khan Academy: Find Missing Number (Add and Subtract Within 20)

For Students K - 1st Standards
Learn how to solve problems like "___ - 7 = 18" where you don't know one of the values in an addition or subtraction equation. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Sums of Whole Numbers to 1000 (Grade 3)

For Students 3rd - 5th
[Free Registration/Login may be required to access all resource tools.] This site offers the video "Addition: 3 Digits." and a practice quiz in which students solve problems using addition to find the sum or summand of numbers up to 1000.
Unit Plan
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation

For Students Pre-K - 1st Standards
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.
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Discovery Education

Discovery Education: Web Math: See How Two Numbers Add Together

For Students 3rd - 5th Standards
WebMath offers a good addition practice site. Students can use this site to check their homework assignment. An explanation is given regarding how each answer was arrived at.
Unit Plan
Khan Academy

Khan Academy: Add 10s and 100s (No Regrouping)

For Students 1st - 3rd
Practice solving problems like 344+20 and 344+200. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Interactive
Arcademics

Arcademics: Canoe Puppies

For Students Pre-K - 1st
Canoe Puppies is a multiplayer math game that allows students from anywhere in the world to race against each other while practicing adding two-digit numbers!
Lesson Plan
Better Lesson

Better Lesson: Go Fishing for Doubles

For Teachers 2nd Standards
Second graders play a favorite card game which practices the quick and accurate recall of double facts.