These games will develop familiarity with the number system and "landmarks" such as 10s, 100s, and 1,000s.  The games will provide  engaging opportunities to practice computation.  If you find that your child hasn't mastered some of the addition or subtraction number facts, choose one or two facts, master those, then move on to one or two more.

Games to help children learn number facts:

• Lots of Spots (addition, equivalent value)
• Directions
• Gameboard
• Number of the Day
• Directions
• Addition Tic Tac Toe
• Directions
• Gameboard
• Greatest Number Wins (2 digit)
• Directions
• Hexagon Cookies Gr 2
• Directions
• Double Top It

Online Resources for parents and children: 

• Glossary of Terms
• Digital Math Manipulatives
• Source for Lots of Games
• Source for Math Interactive Math Fact Work
• Addition/Subtraction Games
• Addition/Subtraction Games
• Video: Subtraction with Regrouping
• Interactive Tangram Puzzles 
• Tangram Template
• Telling Time Activity
• Interactive Making Change Activity