Use this calculator for adding and subtracting positive or negative integers. The calculator shows the work for the math and demonstrates when to change signs for subtracting negative numbers.

Input Examples:

Rules for Adding and Subtracting Integers:

• Same signs: Add the numbers and keep the sign
• Different signs: Subtract the smaller from the larger and use the sign of the larger
• Subtracting a negative: Changes to adding a positive
• Parentheses: Work inside parentheses first