Adding and Subtracting Integers

• Online Flash Card Game
• Adding Integers with Virtual Manipulatives
  
• Subtracting Integers with Virtual Manipulatives
  
• Adding and Subtracting Integers at Math.com
• The Integer Zone
• Introduction to Integers at Math Goodies
  
• Integers and the Real World at Math Goodies
  
• Adding and Subtracting Positive and Negative Numbers by Math League
  
• Line Jumper at Fun Brain
  
• Flash Cards with Negative Numbers
  
• Integers: Operations With Signed Numbers
  
• Mathguide's Operations on Integers