abcteach
Abcteach: Number Puzzles
[Free Registration/Login Required] Solve the number puzzles as you practice basic addition skills and improve your number sense. The site has challenging activities with varying levels of difficulty.
NumberNut
Number Nut: Let Math Begin With Addition
This introductory addition lesson, explores the relationship between adding and number patterns using a number pyramid designed by mathematician Carl Gauss. A short lesson with interesting facts and links to related games for practicing...
ABCya
Ab Cya: Turkey Touchdown
What's more Thanksgiving than turkey and football? What about turkeys playing football? Turkey Touchdown is a great way for kids to celebrate the holiday and practice their math facts. Kids will choose a level of difficulty, and then...
Cool Math
Coolmath: Coolmath4kids: Tugboat Addition
Add numbers quickly to help your tugboat team win!
AAA Math
Aaa Math: Adding Two Digit Numbers
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...
AAA Math
Aaa Math: Adding Two Digit Numbers Mentally
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...