Students represent, locate, compare, and order positive and negative integers and zero on a number line, interpret their signs in real-world contexts, and determine absolute values as distances from zero. Students add and subtract integers using number lines, counters, and symbolic rules, including zero pairs, additive inverses, opposite signs, and negative results. Students evaluate numerical expressions involving integers by applying grouping symbols, whole-number exponents, multiplication and division, and addition and subtraction in the correct order.