Adding and Subtracting Integers

Why is 5 - (-2) = 7 ??

Videos

• Adding Integers with Manipulatives - How-To video using colored chips.
• Subtracting Integers with Manipulatives - How-To video using colored chips.

Rules (written)

• Rules for Adding and Subtracting Integers with Manipulatives - Use chips to help you understand.
• Rules for Adding and Subtracting Integers with a Number Line - Use a number line to help you understand.
• Rules for Adding and Subtracting Integers - just the numbers.

Online Applets

• Numberline Subtraction

Online Games

• Circle 0
• Number Line Bounce
• Color Chips-Addition
• Color Chips-Subtraction
• Arithmetic Four - Two-person game.

Online Practice

• Arithmetic Quiz - Test your arithmetic skills. Asks you to add, subtract, multiply, and divide whole numbers and integers. You may choose difficulty level, question types, and time limit. (Similar format to Arithmetic Four above.)
• Adding and Subtracting Signed Numbers - from The Math Page - hover over the boxes to check your answers.

Technical Notes

1. The video files are .wmv (windows media video) files. On a PC the video should show automatically in your default video player (e.g., Window Media Player, Real Player, etc.).

James R. Olsen, Ph.D. ~ Western Illinois University
URL: www.wiu.edu/users/mfjro1/wiu/MathFundamentals/integers/AddSubInt.htm
updated: September 29, 2013 11:32 PM