Free online math calculator to add, subtract, multiply and divide positive and negative numbers. Online decimal calculator to find sum, difference and products of numbers. In an amazing mathematical puzzle, letters and symbols take place of unknown numbers. This fundamental branch of mathematics helps us to apply mathematical equations and formulas to visually represent real-world problems. Get step-by-step algebra answers instantly — from equations and inequalities to functions and graphing. Type, snap a photo, or use our free calculator. Use numbers, plus + and minus -. You can also group integer addition and subtraction in parentheses ( ) and the calculator will solve the equation. While decimal numbers are not integers we allow decimal inputs in this calculator because of feedback we received from our users. CalcSolver is a free online scientific calculator with live answers, history and shortcuts. Turn on Code Mode and type 0000 to open the library. This is an online scientific calculator with double-digit precision that supports both button click and keyboard type. Type it into the calculator above, or use the on-screen math keyboard for fractions, exponents, radicals, and more. Pick the topic that matches what you want done from the list Mathway suggests for your problem. See the result instantly, then follow the step-by-step explanation of how it was solved. Why use Mathway? Basic Online Calculator with 10-digit keypad and 4 functions to add, subtract, multiply and divide numbers. Includes basic handheld calculator functions for square, square root, percent, sign change, Pi and memory. Even on a basic calculator, grouping changes meaning. 20 + 5 x 3 is not the same as (20 + 5) x 3. This free online calculator can be used for basic computations such as addition, subtraction, multiplication, division, and square roots.