The Sign

The sign in algebra is an indicator that shows whether a number is positive or negative. It’s represented by symbols: a plus sign (+) for positive numbers and a minus sign (−) for negative numbers. The sign helps us understand the number’s value relative to zero, clarifying its position on the number line. For example, +5 means five above zero, while −3 means three below zero. The sign also affects how numbers are added, subtracted, multiplied, or divided, ensuring calculations are accurate and consistent.